Labodiam Dictionary
Labodiam dictionary of common loose diamonds and diamond jewelry terms in the industry and their meanings.
Click on the letters below and choose the word or phrases you'd like to learn.

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Advanced Search
Labodiam has an Advanced Loose Diamond Search that allows you to find the perfect diamond by selecting specific search criteria, such as the cut, color, clarity, carat weight, and price of a diamond. .
Baguettes
The baguette is a step cut style used frequently as side stones. Baguettes have unbeveled corners, usually only two rows of facets, and may be rectangular or tapered. Like the emerald cut, the baguette does not have the sparkle of a brilliant cut but has a classic beauty. Higher color and clarity are important because there are no facets to hide inclusions or body color..
Carat
The standard unit of weight used for gemstones. One carat equals .200 grams (or 200 milligrams). Usually abbreviated ct.

Diamonds are weighed to a thousandth (0.001) of a carat and then rounded to the nearest hundredth, or point. Over a carat, diamond weights are usually expressed in carats and decimals. A 1.03 ct. stone in your diamond jewelry, for example, would be described as "one point oh three carats," or "one oh three." A diamond that weighs 0.83 ct. is said to weigh "eighty-three points," or an "eighty-three pointer." .
Depth
The depth percentage is the height of the diamond (measured from the tip of the culet to the table) compared to the diameter of the diamond (the top of the diamond measured through the middle from one edge of the girdle to the other). To avoid buying a diamond that loses light out the bottom, look for a diamond in which the height measures between 57.5% and 64.5% of the total diamond width. You'll find this measurement on the diamond certificate..
Facet
A polished geometric surface on a diamond. A round brilliant-cut diamond or round full-cut diamond usually has 58 facets..
Value
The finest collection of quality diamonds at the best possible pricing.

We buy our diamonds directly from the source. By avoiding third-party markups and fees, we can pass considerable savings along to our customers. Thus, our exquisite diamonds are offered to you at the lowest possible prices not to mention our superb customer service. .
Appraisal
Appraisal: An appraisal is a document that contains a brief description and photograph of the diamond or jewelry item. An appraisal typically documents key information about your diamond or jewelry item such as the cut , color, clarity, and either carat weight for any diamonds, or millimeter dimensions for any diamonds or precious stones. These key items are documented, so that your insurance agency can calculate a coverage rate for your diamond or piece of fine jewelry, and provide a replacement if needed. Appraisals by Labodiam may be requested during your checkout for an additional $25..
Make
The proportions and finish are also referred to as the "make" of a diamond or gemstone. .
Shapes

The ROUND diamond is today's most popular diamond shape. All other diamond other than round are referred to as "fancy-shaped" diamonds. Since these shapes are all different, unique characteristics determine quality. Below are some learning tools to help you recognize the best fancy shaped diamond shapes. Personal preference of course is the most determining factor for choosing a shape of your choice for your diamond jewelry

ROUND CUT diamonds consists of 57 facets (58 with a culet) and displays the most fire and scintillation of all the cuts. A property why round shape diamonds are popular for diamond jewelry such as engagement rings and wedding bands.

The PRINCESS CUT diamond is a square cut diamond with 90 degree angles on each corner. It has a tremendous amount of brilliance, second only to rounds. Princess cut diamonds have become increasingly popular within the past few years. The princess cut can vary greatly in how square or rectangular they are. For a square shape, look for a length to width ratio between 1.00 and 1.10. For a rectangle, look for a ratio between 1.50 and 2.00. Table should be between 65-80% and the depth between 65-75%.


EMERALD CUT can be rectangular or square in shape and have beveled corners and step-cut facets. This shape really shows off the clarity of a diamond and can vary in the rectangularity. The length to width ratio will allow you to find the shape you are looking for. For a traditional emerald cut, look for a length to width ratio between 1.30 and 1.40. For a pleasant looking emerald cut diamond, the table should measure between 60-75% and depth between 53-70%.

ASSCHER CUT diamonds, often called the square emerald cut, has cropped corners and was designed in 1902 by the Asscher Brothers of Holland. The length to width ratio should be between 1.00 and 1.05. The table and depth percentage should measure the same as an emerald, between 60 - 75% and 53 - 70% respectively.


An OVAL DIAMOND has stunning brilliance, due in large part to its facets, which are similar to those in a round diamond. The length can accentuate long, slender fingers. It was invented in the early 1960’s. For an eye catching and beautiful oval diamond, the length to width ratio should be between 1.33 and 1.66. In this case, the table should measure between 53 - 62% and depth between 60 - 70%.


The DIAMOND MARQUISE cut is elongated with pointed ends. It was inspired by the smile of the Marquise de Pompadour and created for France's Louis XIV, who wanted a diamond to match it. The length of the marquise can also make fingers appear longer and more slender. When looking for a marquise shaped diamond, the length to width ratio should be between 1.50 and 2.25 and table and depth percentages between 53 - 60% and 50 - 65% respectively.


The PEAR SHAPED diamond is a combination of oval and marquise cuts. The sparkling teardrop has good proportions and refracts the light well. This Pear Shaped Diamond looks best set as a pendant or pair of pear diamond earrings. For a pear shape, the length to width ratio should be between 1.40 and 1.75. The table percentage should measure 53 - 60% and depth percentage 50 - 65%.


 

The RADIANT CUT diamond is cut in the shape of a rectangle with rounded corners. Radiant cut diamonds facets are cut into a pattern that gives this diamond the unique appearance of cracked ice. Radiant cut diamonds can vary in their degree of rectangularity. For a square radiant, look for a length to width ratio between 1.00 and 1.10. For a rectangular radiant, the length to width ratio should be between 1.50 and 2.00. Regardless of how rectangular the radiant is, the table should be between 65 - 80% and depth between 65 - 75%.


The HEART SHAPED diamond may be hard to find, but it is considered the most sentimental of all the diamond shapes. It is important to find a heart diamond with even lobes and a well-defined outline. Because its shape is very close to that of a round, it has beautiful brilliance. The length to width ratio for a well-proportioned heart-shaped diamond is between 0.90 - 1.10. The depth of a heart-shaped diamond should be between 50 - 63% and the table between 53 - 65%.

The CUSHION CUT diamond is an antique cut and is also referred to as Pillow cut or the Candlelight diamond. Cushion cut diamonds have larger facets and rounded corners than most cuts so as to increase their sparkle under candlelight.

The TRIANGLE DIAMOND, first designed in Amsterdam, is cut into the shape of a wedge. The corners of the triangle cut diamonds may be pointed or rounded and the body will vary depending on the stone’s characteristics and the cutter’s preference.

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Price
When you start to think about buying a diamond - and the love it will symbolize - you naturally want the best you can afford and a beautiful stone you both will treasure forever. Diamonds can be found in a range of prices - and you're certain to find one within DoW's extensive inventory that suits your taste and budget. If you're about to buy a Diamond Engagement Ring, you may want to consider spending the commonly accepted guideline of two months' salary. But, it's up to you to settle on a diamond that will truly represent your deepest emotions and the promise for the future you will share. .
Color

Refers to the degree to which a diamond is colorless. Diamond color has a significant impact on its value. The color scale ranges from D to Z, from colorless to light yellow. Warmer colored diamonds (K-Z) are particularly desirable when set in yellow gold. Icy winter whites (D-G) look stunning set in white gold or platinum.

 

Color Grade Diagram

Color Grade

Description

D

This is the highest Color Grade and absolutely colorless. Price is high due to its rarity but hey, if you can afford it, go ahead...

E

It is colorless to the unaided eye. Only a trained gemologist using special equipment can determine any color difference between a D- and an E-color diamond. This is considered a rare diamond.

F

Colorless, a slight color detected by an expert gemologist, but still considered a Colorless grade and a high-quality diamond. This will work with any white gold or platinum.

G

This diamond is nearly colorless with an extremely faint tint that is noticeable only to a trained gemologist. G-color diamonds are ideal for beautiful jewelry because they offer an outstanding value at a lesser price compared to the colorless grades, but it still appears to be colorless when mounted.

H

This has an advantage of exceptional value due to the near colorless range. This diamond will appear colorless when mounted on a very slight tint of color.

I

Near-colorless with a slightly detectable tint and is an excellent value.

J

J, J, J... what can i say. Might look better when viewed in the day. Or even better if you may... less to pay to go for a K.

K

This grade begins to show a tint of color when they are of half carat or more. If mounted in white color metals, they may appear as a J-grade.

L

Diamonds graded L show visibly more marked color, and are classified as faintly tinted or colored.

M

Slightly tinted, the line between an L- and M-grade diamond is so thin.

N - Z

Color noticeable by the naked eye.



Fancy Color Grade Diagram

Color Grade

Description

FLY

Fancy light yellow.
There is slight yellow tint that can be detected by human eye on this color range. The buyer perception of color for yellow diamonds is confident, intelligent and wordly. Lighter shades are a great value because they still look yellow, yet you can have more size for the money.

FY

Fancy Yellow.
This color range has yellow hue but less saturated. These stones are very beautiful but less expensive than intense and vivid range.

FI

Fancy Intense.
Intensity color range for diamonds have richer color and quality. Values of this kind of diamond are higher.

FYV

Fancy Yellow Vivid.
Vivid yellow diamonds are the rarest and most unique diamonds. These characteristics make it the most expensive kind from any other range.
 

Grading Natural Fancy Yellow Color Diamond

Diagram of Fancy Yellow Colored Diamonds (Canary)

Range from Vivid to Light



Diagram of Non-fancy Diamond
Range from Z - U

 

Most diamonds used as gemstones are basically transparent with little tint, or white diamonds. The most common impurity, nitrogen, replaces a small proportion of carbon atoms in a diamond's structure and causes a yellowish to brownish tint.

Beautiful yellow diamonds exist in tones from light yellow to fancy intense vivid yellow, also named Canary Yellow, depending on the concentration of nitrogen when the crystal is formed. Yellow diamonds are more desirable than white diamonds, due to their warm color. In fancy diamonds, inclusions are mostly not noticeable to the naked eye because of its rich color, inclusions does not affect the look or its sparkles not like in clear diamonds.

Natural fancy coloured diamonds are very rare and expensive. Most people believe that yellow diamonds are less desirable and valuable than white diamonds. While this is true of faintly coloured or off-white diamonds, intensely coloured diamonds are very attractive, rare and expensive. The Kimberley Octahedron is the largest diamond in the world at about 616 carats, and is yellow.
 

Grading fancy color diamonds

Yellow or brown color diamonds having color more intense than "Z", as well as diamonds exhibiting color other than yellow or brown are considered fancy colored diamonds. These diamonds are graded using separate systems which indicate the characteristics of the color, and not just its presence. These color grading systems are similar to those used for other colored gemstones, such as ruby, sapphire, or emerald, than they are to the system used for white diamonds.
 

GIA colored diamond grading system

The GIA issues grading a Colored Diamond Grading Report for colors that are not in the normal color range of diamonds. Formal GIA terms used to describe natural yellow diamonds:

Fancy Vivid Yellow- Vivid yellow diamonds are the rarest and most unique diamonds. These characteristics make it the most expensive kind from any other range. This range has the richest and most intense hue of all.

Fancy Intense Yellow- Intensity color range for diamonds have richer color and quality. Values of this kind of diamond are higher.

Fancy Yellow- This color range has yellow hue but less saturated. These stones are very beautiful but less expensive than intense and vivid range.

Light Fancy Yellow- There is slight yellow tint that can be detected by human eye on this color range. The buyer perception of color for yellow diamonds is confident, intelligent and wordly. Lighter shades are a great value because they still look yellow, yet you can have more size for the money.

Gran Colorimeter

Color can also be determined using a device called the Gran Colorimeter, manufactured by Sarin Technologies. It measures from D to Z to Fancy Intense with an accuracy within ±½ of a color grade on loose stones from 0.25 to 10 carats (as low as .15 carat or as high as 20 carats with reduced accuracy), and you can specify which grading scale it should use (GIA, GEM, IGI, AGS, HRD, and others). The accuracy is within ±1 color grade for mounted stones. If you diamond is a "G" color it will tell you whether it's a "high G" or a "low G". The Gran colorimeter was first developed by Paul Gran in 1972 at Gran Computer Industries Ltd.

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Diamond

A Diamond is the hardest natural material known to man and the third-hardest known material after aggregated diamond nanorods and ultrahard fullerite. Its hardness and high dispersion of light make it useful for industrial applications and jewelry.

Diamonds are specifically renowned as a material with superlative physical qualities, they make excellent abrasives because they can be scratched only by other diamonds, Borazon, ultrahard fullerite, or aggregated diamond nanorods, which also means they hold a polish extremely well and retain their lustre. About 130 million carats (26,000 kg) are mined annually, with a total value of nearly USD $9 billion. About 100,000 kg are synthesized annually.

The name diamond derives from the ancient Greek adamas (αδ?μας "invincible"). They have been treasured as gemstones since their use as religious icons in ancient India and usage in engraving tools also dates to early human history. Popularity of diamonds has risen since the 19th century because of increased supply, improved cutting and polishing techniques, growth in the world economy, and innovative and successful advertising campaigns. They are commonly judged by the "Four C’s": carat, clarity, color, and cut.

Roughly 49% of diamonds originate from central and southern Africa, although significant sources of the mineral have been discovered in Canada, India, Russia, Brazil, and Australia. They are mined from kimberlite and lamproite volcanic pipes, which brought to the surface the diamond crystals from deep in the Earth where the high pressure and temperature enables the formation of the crystals. The mining and distribution of natural diamonds are subjects of frequent controversy such as with concerns over the sale of conflict diamonds by African paramilitary groups. There are also allegations that the De Beers Group misuses its dominance in the industry to control supply and manipulate price via monopolistic practices, although in recent years the company's market share has dropped to below 50%.

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Certificate
Independent Gemological Laboratories

A diamond grading certificate is a report given by an independent and professional gemological laboratory. The diamond is evaluated for its quality, not its value. Every diamond is unique. The certificate will map out all the diamond's recognizable and individual characteristics. Each certificate will include the diamond's color, clarity, carat weight and cut information (see the 4 C's). The grading report also includes a hand-drawn map of the diamond's inclusions. Since no two diamonds are exactly alike you can always check that the certificate matches the diamond.

When it comes to certification and appraisal, you need absolute accuracy, precision and reliability. That is why our stones are appraised by two of the most respected laboratories in the Trade.
 
GIA logo
GEMOLOGICAL INSTITUTE OF AMERICA (GIA)
An independent nonprofit organization, the Gemological Institute of America (GIA) is renowned for its impartial service as the world's foremost authority in gemology. The Institute's history of ground-breaking scientific research, education, and gemological laboratory services reads as a virtual chronicle of the industry's own growth and sophistication.

From 1953, when Richard T. Liddicoat created and introduced the International Diamond Grading System™ - to the position the Institute holds today as the most respected grading and identification authority in the world - GIA has combined the principles of research, education, and service to help gem and jewelry professionals around the globe use science and product knowledge to sustain the public's trust.

The GIA can be reached at:
 

Gemological Institute of America (GIA)
World Headquarters
The Robert Mouawad Campus
5345 Armada Drive
Carlsbad, California 92008
Telephone: 800-516-1412 
E-mail: lab@labodiam.com

EGL USA logo
EUROPEAN GEMOLOGICAL LABORATORY (EGL) USA
EGL USA is one of the largest and oldest independent gemological institutions focusing on gemstone certification and research. Originally part of an international network founded in Europe in 1974, EGL USA opened its first U.S. lab in the heart of New York's international diamond and jewelry district in 1977. In 1986 EGL USA became independently owned. Today the EGL USA Group has laboratories in New York City, Los Angeles, Vancouver, and Toronto.

EGL USA is not affiliated with any other EGL labs outside North America.

Every certificate issued by our lab states "A member of the EGL USA Group." Certificate numbers are preceded by either "US" or "CA," to indicate country of origin and to provide consumers the assurance that their certificate has been issued by a member of the EGL USA Group.

In 1999 EGL USA initiated a Research Department to respond to the changing needs of the jewelry industry. It is one of only a few labs worldwide doing advanced research in gemology.

The EGL can be reached at:
 

EGL USA
6 West 48th Street
New York, NY 10036
Telephone: 800-516-1412 
Fax: 800-516-1412 
E-mail: lab@labodiam.com

And @

EGL USA/Los Angeles
550 South Hill
Suite 840
Los Angeles, CA 90013
Telephone: 800-516-1412 
Fax: 800-516-1412 

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Table
The table percentage is the diameter of the top facet (or table) compared to the diamond's width. For a diamond with the most sparkle and fire, we recommend a diamond in which the table measures between 51% and 65% of the total diamond width. These measurements are stated on the diamond certificate. Example: If the table equals 5mm, and the width equals 9mm, 5 divided by 9 = 55%, which qualifies as ideal table percentage. .
Cut

The GIA Cut Scale ranges from Excellent to Poor and they provide a cut quality grade for standard round brilliant diamonds that fall in the D-to-Z color range. A polished diamond's beauty lies in its complex relationship with light:

  • how light strikes the surface
  • how much enters the diamond
  • how light returns to the eye
  • in what form light returns to the eye

The result of the complex relationship with light is a magnificent display of three attributes. Brightness is the combination of all white light reflecting from the surface and interior of a diamond. Fire describes the "flares" of color emitted from a diamond. Scintillation describes the flashes of light you see when the diamond, the light or when the observer moves.

ideal cut proportions

A polished diamond's proportions affect its light performance, which in turn affects its beauty and overall appeal. Diamonds with fine proportions, symmetry and polish optimize their interaction with light, and have increased brightness, fire and scintillation.

Learn about Hearts and Arrows
 

LabODiam Ideal Princess Cut

ideal cut princess

Each LabODiam Ideal Princess Cut diamond has exact proportions, and is certified to have a length-to-width ratio no greater than 1.05. The LabODiam Ideal Princess Cut diamond features a longer crown height that is almost twice the normal height that the industry is producing. The light can be absorbed more if the crown is higher, while the exquisite polish and symmetry enable the facets to display maximum brilliance. With its smaller table and precise symmetry, the LabODiam Ideal Princess Cut diamond is able to return more light. Each diamond is engineered to maximize quality over size. While typical diamonds are cut to a depth of 88% or more, LabODiam Ideal Cut diamonds are cut to a depth of 70% or less, giving up approximately 7% carat weight to ensure higher quality.
 

LabODiam Ideal Emerald Cut

ideal cut emerald

The major difference between the LabODiam Ideal Emerald Cut diamond and the standard emerald cut in the industry are the culet and higher crown. Also, LabODiam Ideal Emerald Cut diamond has outstanding proportions, symmetry, polish, maximum brilliance and ability to stop light from escaping. The brilliance is achieved by bigger crown facets which absorb more light, while the distribution of pavilion facets reflects more light. In addition, all LabODiam Ideal Emerald Cut diamonds have a guaranteed clarity of VS2 or better, so you can be assured that stones will be eye-clean.
 

LabODiam Ideal Asscher Cut

ideal cut asscher

Only the finest chosen raw diamonds are cut to produce LabODiam Ideal Asscher Cut diamond to make sure of the precise proportions to get absolutely perfect length-to-width ratios. One of the major differences of LabODiam Ideal Asscher Cut diamond and the standard emerald cut in the industry is its wider corners. This perfect angle can capture more light from this eight corner as it reflect square pattern that product more brightness and sparkles. Also you will notice that the crown is about 10% higher than the standard diamond. It makes the table smaller and larger facets on the crown that capture and return more light. Another difference is having a cullet. "

Hearts and Arrows on LabODiam Ideal Round Cut

hearts and arrows

The term Hearts and Arrows is used to describe the figure that can be seen on the bottom and top of a round diamond with perfect symmetry and angles. The Hearts and Arrows effect is exist in all of LabODiam Ideal Round Cut Collection diamonds. When viewed under special magnification, the perfectly aligned facets of the LabODiam Ideal Round Cut diamond reveal the Hearts and Arrows pattern. From the bottom, eight absolute symmetrical hearts can be seen and, when viewed from the top, eight thoroughly uniform arrows can be seen. This shows how perfect and uniform each facet of a diamond which will have the maximum brilliance.

ideal hearts and arrows cut
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Fluorescence
Diamond fluorescence* is a form of illumination that is created when a diamond is exposed to Ultraviolet (UV) light. Your diamond can be exposed to UV light from the "black lights" often found in nightclubs, the drying lights used in nail salons, fluorescent lights or direct sunlight. Diamonds emit light due to fluorescence when small amounts of the element boron are present in the stone when it crystallized deep in the earth where there is a lot of heat and pressure. Blue is the most common color of fluorescence, but other colors (yellow, greenish blue, green, white and pink) are also possible. In some instances, give the diamond a slight hazy or oily appearance. *Important Note* *Diamonds with a strong fluorescence are priced slightly lower than other diamonds. *Diamonds with a Very strong fluorescence are priced Extremely lower than other diamonds. *Faint and medium are priced few percentage lower. *Lower color stones like I-J-K-L color, Faint and Medium fluorescence are priced slightly higher. .
Symmetry
Exactness of the diamonds outline, and the shape, placement and alignment of its facets.
Weight
The standard unit of weight used for gemstones. One carat equals .200 grams (or 200 milligrams). Usually abbreviated ct. Diamonds are weighed to a thousandth (0.001) of a carat and then rounded to the nearest hundredth, or point. Over a carat, diamond weights are usually expressed in carats and decimals. A 1.03 ct. stone, for example, would be described as "one point oh three carats," or "one oh three." A diamond that weighs 0.83 ct. is said to weigh "eighty-three points," or an "eighty-three pointer." .
Crescent Cut
The crescent cut diamonds are typically used for side stones and are similar to the half moon shape except they have a curved inner side rather than the half moon's straight side. Crescent cut diamonds look great with curved center stones like the oval, marquise and cushion cuts..
Half Moon Cut
The half moon diamonds are used mainly for side stones and have the profile of half a round or half an oval diamond. They look great with rectangular center stones such as princess, radiant or emerald because they have one straight side. Because of the rounded edge, half moon diamonds also work well with ovals shaped stones..
Kite Cut
The brilliant kite diamond is usually used for side stones but also make a unique pendant. A unique use of kite shaped diamonds uses 5 kite shaped diamonds set in a star design, invisible set in the center and held with single prongs on each of the "star's" points. The use of five smaller stones is a much less expensive than the high diamond waste required to cut a single stone star shaped diamond. .
Briolette Cut
The Briolette Cut is a drop-shaped stone with triangular or diamond-shaped facets all the way around. There is no table, crown or pavilion. The more facets, the more brilliant the stone appears. The facets on a Briolette are all triangular in shape entirely covering the circular cross section of the stone. .
Old European Cut
An old European cut diamond is an old style of faceting a diamond in a round shape, hand worked, in a less than perfect fashion. This style enabled the diamonds 58 facets to show broader reflective bands of brilliance returning back up through the top portion of the diamond (the table facet). Old European cut diamonds continued the characteristic of the old cuts with their open culet and higher crown. It is similar to the old mine cut, but is round rather than squarish and has 58 facets. .
Old Mine Cut
The old mine cut was a predecessor of the round brilliant cut. It came into existence in the late 17th century. The old miner was the first diamond cut that had all the facets of the present round brilliant cut: the bezel, the star, pavilion mains, etc. However, the facet alignment and sizes were in a different manner as compared to the current round brilliant. The old miner was also more of a square or cushion cut, rather than being round. In fact, today's cushion cut is an improved old mine cut.
Rose Cut
THe Rose Cut was developed in the 16th century. It has a flat bottom and domed top covered with triangular facets. The outline varies, but rose cuts are most typically round, oval, triangular or pear-shaped. In the 17th century, they gained greater acceptance and their facet arrangement became less random. Variations were always in multiples of six, such as a six-facet rose, an 18-facet rose and the full rose cut, which has a lower tier of 18 facets and upper tier of six facets coming to a point at the apex, which makes it look like a rosebud just starting to open. .
Measurement
The dimensions of the diamond listed as "minimum diameter - maximum diameter x depth" for round diamonds and "length x width x depth" for fancy shaped diamonds. (ex: 6.46 - 6.16 x 4.46).
Proportions
They are usually mentioned in percentage or angles. The right percentage and angles result in an optimum balance of dispersion and brilliance. They consist of Table %: The table decides how much brilliance (white light) is reflected back to the eye. A majority of diamonds have their table percentage ranging from 53 % to 64 %. .
Table Percentage
The table percentage is the diameter of the top facet (or table) compared to the diamond's width. For a diamond with the most sparkle and fire, we recommend a diamond in which the table measures between 51% and 65% of the total diamond width. These measurements are stated on the diamond certificate. Example: If the table equals 5mm, and the width equals 9mm, 5 divided by 9 = 55%, which qualifies as ideal table percentage. .
Depth Percentage
The depth percentage is the height of the diamond (measured from the tip of the culet to the table) compared to the diameter of the diamond (the top of the diamond measured through the middle from one edge of the girdle to the other). To avoid buying a diamond that loses light out the bottom, look for a diamond in which the height measures between 57.5% and 64.5% of the total diamond width. You'll find this measurement on the diamond certificate..
Carat Weight
The weight of a diamonds is generally given in carats. The term carat originated in ancient times when gemstones were weighted against the carob bean. Each bean weighed about one carat. In 1913, carat weight was standardized internationally and adapted to the metric system. One carat equals 0.2 grams - a little more than 0.007 ounce. In other words, it takes 142 carats to equal 1 ounce. Two terms, carat and karat are often confused. In the US, karat refers to the fineness of gold alloys (pure gold is 24 karat; 14 karat is 14 parts gold and 10 parts other metals) and carat refers to gem weights. .
Polish
The overall condition or smoothness of the diamond's surface. The smoother the surface of the diamond the more light pass through the facets making the diamond brilliant. Below are the following polish grades for a diamond.

Ideal ( ID ) - Flawless, best among the polish grade.
Excellent ( EX ) - Flawless at 10x magnification.
Very Good ( VG ) - Very difficult to locate at 10x magnification.
Good ( G ) - Difficult to see at 10x magnification.
Fair ( F ) - Slightly noticeable at 10x magnification.
Poor ( P ) - Quite noticeble by the human eye..
Girdle
The narrow rim of a diamond that separates the crown from the pavilion. It is the largest diameter to any part of the stone. .
Culet
A diamond's culet is the point on the bottom of a diamond's pavilion. A diamond's culet may be pointed or it may be blunted with a small facet. The culet facet can vary in size. This culet's size determines the grade that the culet is assigned. .
Comment
Comments describe additional identifying characteristics or features that are not otherwise represented on the diamond grading report (Diamond Certification) .
AGS
The American Gem Society was established in 1934. It is a recognized authority in the testing and certification of Registered Jewelers, Certified Gemologists, and Certified Gemologist Appraisers..
Amethyst
A purple variety of quartz, amethysts have long been featured in the crown jewels of royalty. These brilliant purple gemstones show highlights of lavender. Amethysts are the birthstone of February. A large number of further miraculous powers are attributed to this stone in all sorts of culture. It is also esteemed as a stone of friendship. The most beautiful of all crystal quartzes..
Bezel Setting
A metal rim that surrounds the gemstone to secure it in place by the girdle. The bezel setting style is secure, but does not block light from entering the stone and creating brilliance. .
Bar Channel Setting
Individual metal bars are set perpendicular to the ring, separating the gemstones. The metal is molded around a gem to lock it in place. .
Brilliance
Light reflected up through the surface of a diamond. Brilliance is maximized by cutting a diamond to the correct proportions. .
Channel Setting
A setting style where ridges in the metal create a channel that holds gemstones securely in place. .
Cloud
A group of tiny pinpoints found inside a diamond. Most clouds are made up of crystals too tiny to see individually under the 10X magnification of a jeweler's loupe. Clouds may be impossible to see with the naked-eye in diamonds of very high clarity. This is rarely a serious inclusion. .
Earring Hooks
These earring findings are the metal pieces that attach the earring to your ear. They have a open loop that goes through your ear, and a closed loop that is attached to jewelry. .
Earring Posts
This earring finding is the metallic pole that can attach the earring to your ear, with a nut at the other end to hold it into place. .
Ear Clip
These clip-on earring findings are used for people who haven't got pierced ears, and snap securely into place. .
Ear Threaders
These long pieces of chain thread through your earring hole with a thin piece of metal at one end. They hang from your ear lobe with a long piece of chain on both sides. .
Bank Wire

A bank wire can be used to pay for all labodiam items. LabODiam applies a 2% discount to your order when you purchase through bank wire.

After you place an order and select bank wire as your method of payment, LabODiam will contact you through phone or email and provide the necessary account information to successfully transfer funds from your account into a LabODiam account.

A bank wire may take the bank up to two business days to process, so LabODiam will keep your order on hold for those two business days. Once your bank has transferred the funds and LabODiam has been notified, your purchase will be processed.

If you have any questions about the steps involved in a bank wire, contact your bank or call LabODiam’s customer service at 800-516-1412.

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Budget


Determine Your Budget


When a guy’s shopping for an engagement ring, sales people often do a sneaky thing - they make him think that the amount of his love is tied to how much he spends on a ring. Better to figure out how much you can afford to spend before you step foot in a store. The standard rule is two months salary but this is also a rule that the diamond industry created! However it is still a decent place to start, but then figure out your personal budget.
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Clarity
Diamonds with few flaws, or inclusions, are very rare and highly valued. Inclusions are natural identifying characteristics such as minerals or fractures, appearing while formed in the earth. They may look like tiny crystals, clouds or feathers. Below are the definitions of Clarity grading.


Clarity Grade Diagram



Clarity Grade
Description
FL
Flawless.
Shows no inclusions or blemishes of any sort under 10X magnification when observed by an experienced grader. No internal flaws. Very rare and very expensive.
IF
Internally Flawless.
Has no internal inclusions when examined by an experienced grader using 10X magnification, but will have some minor blemishes. Also very rare and very expensive.
VVS1
Very, Very Slightly Included.
This contains minute inclusions that are difficult to see under 10X magnification even for experienced graders.
VVS2
Very, Very Slightly Included.
Contains minute inclusions that are difficult even for experienced graders to under 10X magnification. More inclusions compared to VVS1.
VS1
Slightly Included.
Contains inclusions (clouds, included crystals, knots, cavities and feathers) that are noticeable to an experienced grader under 10X magnification. Might be visible to the naked eye. Lesser inclusions as compared to VS2 and this grade is considered of good quality.
VS2
Very Slightly Included.
Contains minute inclusions such as small crystals, clouds or feathers when observed with effort under 10X magnification. More inclusions as compared to VS1 but less compared to SI1. Inclusions are not visible to the unaided eye and is considered high quality.
SI1
Slightly Included.
Contains inclusions (clouds, included crystals, knots, cavities and feathers) that are noticeable to an experienced grader under 10X magnification. Might be visible to the naked eye. Lesser inclusions as compared to SI2 and this grade is considered of good quality.
SI2
Slightly Included.
Contains inclusions (clouds, included crystals, knots, cavities and feathers) that are noticeable to an experienced grader under 10X magnification and might be visible to the naked eye. Lesser inclusions as compared to SI3. A good diamond value.
SI3
Slightly Included.
Contains inclusions (clouds, included crystals, knots, cavities and feathers) that are noticeable to an experienced grader under 10X magnification. Might be visible to the naked eye. Lesser inclusions as compared to I1. A good diamond value.
I1
Contains inclusions (possible large feathers or large included crystals) that are obvious under 10X magnification and may affect transparency and brilliance. Inclusions are visible to the naked eye.
I2
Large and/or numerous internal defects which are very easily discernible by the experienced expert with the naked eye and which diminished brilliance.
I3
Large and/or numerous internal defects which are easily discernible by the experienced expert with the naked eye and which slightly diminished brilliance.
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Fancy Colored Diamond

Natural Fancy Yellow Color Diamond

Diagram of Fancy Colored Diamonds(Canary)

Range from Vivid to Light



Diagram of Non-fancy Diamond
Range from Z - U

 

 

Most diamonds used as gemstones are basically transparent with little tint, or white diamonds. The most common impurity, nitrogen, replaces a small proportion of carbon atoms in a diamond's structure and causes a yellowish to brownish tint.

Beautiful yellow diamonds exist in tones from light yellow to fancy intense vivid yellow, also named Canary Yellow, depending on the concentration of nitrogen when the crystal is formed. Yellow diamonds are more desirable than white diamonds, due to their warm color. In fancy diamonds, inclusions are mostly not noticeable to the naked eye because of its rich color, inclusions does not affect the look or its sparkles not like in clear diamonds.

Natural fancy coloured diamonds are very rare and expensive. Most people believe that yellow diamonds are less desirable and valuable than white diamonds. While this is true of faintly coloured or off-white diamonds, intensely coloured diamonds are very attractive, rare and expensive. The Kimberley Octahedron is the largest diamond in the world at about 616 carats, and is yellow.
 

Grading fancy color diamonds

Yellow or brown color diamonds having color more intense than "Z", as well as diamonds exhibiting color other than yellow or brown are considered fancy colored diamonds. These diamonds are graded using separate systems which indicate the characteristics of the color, and not just its presence. These color grading systems are similar to those used for other colored gemstones, such as ruby, sapphire, or emerald, than they are to the system used for white diamonds.
 

GIA colored diamond grading system

The GIA issues grading a Colored Diamond Grading Report for colors that are not in the normal color range of diamonds. Formal GIA terms used to describe natural yellow diamonds:

  Fancy Vivid Yellow- Vivid yellow diamonds are the rarest and most unique diamonds. These characteristics make it the most expensive kind from any other range. This range has the richest and most intense hue of all. Fancy Intense Yellow- Intensity color range for diamonds have richer color and quality. Values of this kind of diamond are higher. Fancy Yellow- This color range has yellow hue but less saturated. These stones are very beautiful but less expensive than intense and vivid range. Light Fancy Yellow- There is slight yellow tint that can be detected by human eye on this color range. The buyer perception of color for yellow diamonds is confident, intelligent and wordly. Lighter shades are a great value because they still look yellow, yet you can have more size for the money.  

Gran Colorimeter

Color can also be determined using a device called the Gran Colorimeter, manufactured by Sarin Technologies. It measures from D to Z to Fancy Intense with an accuracy within ±½ of a color grade on loose stones from 0.25 to 10 carats (as low as .15 carat or as high as 20 carats with reduced accuracy), and you can specify which grading scale it should use (GIA, GEM, IGI, AGS, HRD, and others). The accuracy is within ±1 color grade for mounted stones. If you diamond is a "G" color it will tell you whether it's a "high G" or a "low G." The Gran colorimeter was first developed by Paul Gran in 1972 at Gran Computer Industries Ltd.

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Sapphire
Sapphire refers to gem varieties of the mineral corundum, an aluminum oxide (Al2O3), when it is a color other than red. It can be found naturally or manufactured in large crystal boules for varied applications, including infrared optical components, watch faces, high-durability windows, and wafers for the deposition of semiconductors such as GaN nanorods.

The mineral corundum consists of pure aluminum oxide. Trace amounts of other elements such as iron, titanium and chromium give corundum their blue, yellow, pink, purple, orange or greenish color. Sapphire includes any gemstone quality varieties of the mineral corundum except the fully saturated red variety, which is instead known as ruby, and the pinkish-orange variety known as padparadscha.

Although blue is considered the normal color for sapphires, they can be found across a full range of spectral colors as well as brown, colorless, grey and black. Those other than blue in color are considered fancy color sapphires. Some natural sapphires can be found as completely transparent, or "white." White sapphires usually come out of the ground as light grey or brown and are then heated to make them clear. However, in very rare circumstances they will be found in a clear state..
Fancy Yellow Diamonds

Natural Fancy Yellow Color Diamond

Diagram of Fancy Colored Diamonds(Canary)

Range from Vivid to Light



Diagram of Non-fancy Diamond
Range from Z - U

 

 

Most diamonds used as gemstones are basically transparent with little tint, or white diamonds. The most common impurity, nitrogen, replaces a small proportion of carbon atoms in a diamond's structure and causes a yellowish to brownish tint.

Beautiful yellow diamonds exist in tones from light yellow to fancy intense vivid yellow, also named Canary Yellow, depending on the concentration of nitrogen when the crystal is formed. Yellow diamonds are more desirable than white diamonds, due to their warm color. In fancy diamonds, inclusions are mostly not noticeable to the naked eye because of its rich color, inclusions does not affect the look or its sparkles not like in clear diamonds.

Natural fancy coloured diamonds are very rare and expensive. Most people believe that yellow diamonds are less desirable and valuable than white diamonds. While this is true of faintly coloured or off-white diamonds, intensely coloured diamonds are very attractive, rare and expensive. The Kimberley Octahedron is the largest diamond in the world at about 616 carats, and is yellow.
 

Grading fancy color diamonds

Yellow or brown color diamonds having color more intense than "Z", as well as diamonds exhibiting color other than yellow or brown are considered fancy colored diamonds. These diamonds are graded using separate systems which indicate the characteristics of the color, and not just its presence. These color grading systems are similar to those used for other colored gemstones, such as ruby, sapphire, or emerald, than they are to the system used for white diamonds.
 

GIA colored diamond grading system

The GIA issues grading a Colored Diamond Grading Report for colors that are not in the normal color range of diamonds. Formal GIA terms used to describe natural yellow diamonds:

  Fancy Vivid Yellow- Vivid yellow diamonds are the rarest and most unique diamonds. These characteristics make it the most expensive kind from any other range. This range has the richest and most intense hue of all. Fancy Intense Yellow- Intensity color range for diamonds have richer color and quality. Values of this kind of diamond are higher. Fancy Yellow- This color range has yellow hue but less saturated. These stones are very beautiful but less expensive than intense and vivid range. Light Fancy Yellow- There is slight yellow tint that can be detected by human eye on this color range. The buyer perception of color for yellow diamonds is confident, intelligent and wordly. Lighter shades are a great value because they still look yellow, yet you can have more size for the money.  

Gran Colorimeter

Color can also be determined using a device called the Gran Colorimeter, manufactured by Sarin Technologies. It measures from D to Z to Fancy Intense with an accuracy within ±½ of a color grade on loose stones from 0.25 to 10 carats (as low as .15 carat or as high as 20 carats with reduced accuracy), and you can specify which grading scale it should use (GIA, GEM, IGI, AGS, HRD, and others). The accuracy is within ±1 color grade for mounted stones. If you diamond is a "G" color it will tell you whether it's a "high G" or a "low G." The Gran colorimeter was first developed by Paul Gran in 1972 at Gran Computer Industries Ltd.

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Citrine
The Citrine is the Gemstone for the month of November, popularly known as Gold Topaz, Madeira or Spanish Topaz. It is a member of the large quartz family, a family which, with its multitude of colors and very various structures, offers gemstone lovers almost everything their hearts desire in terms of adornment and decoration. The name derived from the color- the yellow of the lemon, but it comes in lemon yellow to reddish brown. As quartz, it is insensitive to scratches. Citrine Jewelry shimmers and brings a hint of sunshine to those dull November days..
Tourmaline
Being referred to as "Gemstone of the rainbow", comes from the Singhales words "tura mali" means stone of mixed colors. This gemstone has an endless number of faces, and for that reason suits all moods. It is the gemstone of firm and long lasting love and friendship. Popular not only in jewelry but also as therapeutic stone..
Return Policy

We guarantee your satisfaction with all LOD diamonds and jewelry. Our return policy gives you plenty of time to consider your purchase. That's why you can be sure you made the right decision.

NOTE:

*Shipment charges (both ways) apply to any returned goods.Automatic $25 (Sat.Delivery $45)will be deducted from your original refunded amount.

*Any Certificate or Appraiser changes are not refundable

*Shipment charges will apply(both ways) for not being available to sign for package.
Packages will be delivered to shipping address only, Due to high value packages No pickups allows at the delivery service centers.

 

Platinum Return Policy
Due to the constant fluctuation of Platinum prices, some platinum items are non-refundable at this point.*Note: ask for same item in white gold to be ship to you as a consignment, read more about Consignment Option

Loose Diamonds
If you have purchased loose diamonds, you have 60 days to inspect them and make a final decision. If for any reason you decide not to keep the diamonds, we will accept it back in its original condition.

Pre-Set Jewelry
For Pre-set Jewelry, you have 30 days to inspect the merchandise. If you are not fully satisfied with your purchase, we will accept it back in its original condition.

Customized Jewelry
Items that are custom made are not returnable nor can be canceled once the order is confirmed by one of our specialists. Custom made items are merchandise that were ordered with specific requirements or requests that are not in our inventory. If you are not sure if an item must be modified please ask one of our specialists before submitting your customized order.

Return Procedure

NOTE:Shipment charges (both ways) apply to any returned goods.Automatic $25 will be deducted from your original refunded amount.

To return a diamond or jewelry item to labodiam, follow our three step process:

1. Your Return Authorization Code

Call 800-516-1412 and you will be given a Return Authorization Code. Write this code on the return sticker found at the bottom of your original invoice. Affix the sticker to the outside of the box you are returning.

 

2. Package Your Return

Include all original packaging and collateral material. If your item was delivered with a diamond certificate and that certificate is not returned, you may be liable for the $250 replacement cost. For security reasons, do not write labodiam  anywhere on the outside of the box.

 

3. Insure Your Package

Please ship your return package back to LabODiam.com via United States Postal Service. We recommend that you use the following U.S.P.S. services:

  Insurance with Registered Mail
 


When returning your diamond, we recommend you use Registered Mail, which provides insurance coverage up to $25,000.

Registered Mail
 

Registered Mail is the most secure service that the U.S.P.S. offers. Items you send are placed under tight security from the point of mailing to the point of delivery. To protect against loss or damage, postal insurance is provided for articles with a maximum declared value up to $25,000.

To ship via U.S.P.S. Registered Mail, you must bring the package to your local post office, station, or branch. A postmaster may require that an article of unusually high value be presented only at the main office or at designated stations and branches

Visit the U.S.P.S. website for more details including Registered Mail fees.

Return Receipt
 

We recommend you use Return Receipt along with Registered Mail. With Return Receipt service, you get a postcard sent to you, signed by the person who received your package.

A return receipt must be purchased at the time of mailing. The fee for this service is $1.75. Consult your local post office for additional details.

For more information on U.S.P.S. services, contact them at 1-800-ASK-labodiam (1-800-275-8777) or visit their web site at www.labodiam.com.

On your invoice, if the price of the item you're returning is listed as:

 

 

You must follow these instructions exactly, failure to do so will prevent the processing of your return. If you have any questions about our return procedure, please contact us at Sales@LabODiam.com.

 

  • labodiam will not be responsible for loss or damage of return shipments.

 

Upon receiving your return, the item will be reviewed a third party gemologist. Once the returned item is reviewed and accepted, your refund or new item will be processed in just a few days Please note that items showing signs of wear or those that have been engraved, altered, resized (by a jeweler other than labodiam), or damaged in any way cannot be accepted for return. Returns with no labodiam return code, and packages that are improperly packaged or uninsured will be refused receipt.

 

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Width

The width is the horizontal measurement of piece of jewelry. Any band or ring is measured across the widest area on the top. Settings are measured across the widest metal part, closest to where the center diamond is set. All measurements are approximate and refer to the widest part of the piece.
 

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Friction Post
A device for preventing loss of a pierced earring from an ear lobe is provided and consists of a holder member which will cling to friction post behind the ear lobe. When the friction nut is removed from the earring the holder member will continue to keep the earring in place thereto.
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Screw Back
A threaded post and screw used as the back setting for earrings. Screw backs are chosen as setting to secure more expensive earrings by holding them more securely in place. The lock is harder to take off because you have to rotate it many times.
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Grade

Grading Natural Fancy Yellow Color Diamond

Diagram of Fancy Colored Diamonds(Canary)

Range from Vivid to Light



Diagram of Non-fancy Diamond
Range from Z - U

 

Most diamonds used as gemstones are basically transparent with little tint, or white diamonds. The most common impurity, nitrogen, replaces a small proportion of carbon atoms in a diamond's structure and causes a yellowish to brownish tint.

Beautiful yellow diamonds exist in tones from light yellow to fancy intense vivid yellow, also named Canary Yellow, depending on the concentration of nitrogen when the crystal is formed. Yellow diamonds are more desirable than white diamonds, due to their warm color. In fancy diamonds, inclusions are mostly not noticeable to the naked eye because of its rich color, inclusions does not affect the look or its sparkles not like in clear diamonds.

Natural fancy coloured diamonds are very rare and expensive. Most people believe that yellow diamonds are less desirable and valuable than white diamonds. While this is true of faintly coloured or off-white diamonds, intensely coloured diamonds are very attractive, rare and expensive. The Kimberley Octahedron is the largest diamond in the world at about 616 carats, and is yellow.
 

Grading fancy color diamonds

Yellow or brown color diamonds having color more intense than "Z", as well as diamonds exhibiting color other than yellow or brown are considered fancy colored diamonds. These diamonds are graded using separate systems which indicate the characteristics of the color, and not just its presence. These color grading systems are similar to those used for other colored gemstones, such as ruby, sapphire, or emerald, than they are to the system used for white diamonds.
 

GIA colored diamond grading system

The GIA issues grading a Colored Diamond Grading Report for colors that are not in the normal color range of diamonds. Formal GIA terms used to describe natural yellow diamonds:

Fancy Vivid Yellow- Vivid yellow diamonds are the rarest and most unique diamonds. These characteristics make it the most expensive kind from any other range. This range has the richest and most intense hue of all.

Fancy Intense Yellow- Intensity color range for diamonds have richer color and quality. Values of this kind of diamond are higher.

Fancy Yellow- This color range has yellow hue but less saturated. These stones are very beautiful but less expensive than intense and vivid range.

Light Fancy Yellow- There is slight yellow tint that can be detected by human eye on this color range. The buyer perception of color for yellow diamonds is confident, intelligent and wordly. Lighter shades are a great value because they still look yellow, yet you can have more size for the money.

Gran Colorimeter

Color can also be determined using a device called the Gran Colorimeter, manufactured by Sarin Technologies. It measures from D to Z to Fancy Intense with an accuracy within ±½ of a color grade on loose stones from 0.25 to 10 carats (as low as .15 carat or as high as 20 carats with reduced accuracy), and you can specify which grading scale it should use (GIA, GEM, IGI, AGS, HRD, and others). The accuracy is within ±1 color grade for mounted stones. If you diamond is a "G" color it will tell you whether it's a "high G" or a "low G." The Gran colorimeter was first developed by Paul Gran in 1972 at Gran Computer Industries Ltd.

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Shipping
Domestic shipping:
Shipping Charge We want your shopping experience to be simple and convenient by eliminating hidden charges and additional calculations. Therefore, LabODiam charges a flat rate of only $20 for 2-day shipment, $25 for next day shipment and $45 for Saturday shipment anywhere in the U.S. regardless of your total purchase amount.

Alternative shipping address:
If you prefer, we can ship your order to an address other than your billing address, or If you will not be home to sign for your order (except P.O. Box). As a security precaution, we require that your alternate shipping address be on file with your credit card company. This step helps protect you from fraudulent charges to your credit card. To help expedite your order, simply call your issuing bank and provide them with your alternate shipping address. After filling this matter with your credit card company, please contact a LabODiam customer representative to confirm your transaction. .
International Shipping
All International Shipping charges is a $75 USD flat rate (totally insured) plus custom charges (duty) to be paid to FedEx by the customer at the time of the delivery of your diamond jewelry depending on the country.

Common Countries:
AU - 75 USD + 10.0% (approx.)
CA - 75 USD + 6--8% (approx.)
FR - 75 USD + 19.6% (approx.)
GR - 75 USD + 19.0% (approx.)
IT - 75 USD + 20.0% (approx.)
SP - 75 USD + 16.0% (approx.)
SZ - 75 USD + 07.6% (approx.)
UK - 75 USD + 17.5% (approx.)

For More Information on custom charges (duty), Click here

Country-Specific Tariff and Tax Information.
Post Type

Friction Post

A device for preventing loss of a pierced earring from an ear lobe is provided and consists of a holder member which will cling to friction post behind the ear lobe. When the friction nut is removed from the earring the holder member will continue to keep the earring in place thereto.

Screw Back

A threaded post and screw used as the back setting for earrings. Screw backs are chosen as setting to secure more expensive earrings by holding them more securely in place. The lock is harder to take off because you have to rotate it many times.
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Pave Setting

This setting is used for numerous diamonds set together in a tight cluster or group, with minimal metal showing. Giving the impression that the piece of jewelry is entirely paved with stones.

The settings are either created by use of tiny prongs that hold the jewels on both sides, or are crafted by scooping beads of precious metal out to hold the diamonds in place.

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APO/FPO Shipping
The LabODiam family salute our soldiers and we are proud to support overseas military families.

Place your order through the regular process, choose the $20 shipping and we will ship your order to your APO / FPO address. Please note, packages normally shipped to APO / FPO addresses via labodiam only, will take up to 2 to 4 weeks to arrive from the date of the shipment.

Unfortunately for security reasons, labodiam will not update us via email, provide updates on their website or give us any information over the phone on APO / FPO packages other than the date the package was received at their facility and the final delivery date of your diamond jewelry.

All of our shipments to APO / FPO addresses are fully insured and labodiam will only allow us to put a trace/claim on APO / FPO shipments after 30 days from shipment date (45 days on some APO / FPO destinations).

Please be assured that we have sent over 100 packages to APO / FPO addresses since 2004 and we are looking and tracking all of our packages on daily basis..
Micro Pave Setting
Some settings are too small to be set with the naked eye. They are set with the aid of a microscope and delicate setting tools. This process is called a Micro Pave setting..
Rough
Rough diamonds are also called unpolished or uncut diamonds, these are raw diamonds straight from the mines and no diamond processing done to it..
Wholesale
The sale of diamonds and jewelry to other wholesalers, jewelry manufacturers, retailers, jewelry shops, dealers and related subordinated services..
Kimberlite
A volcanic rock formation in South Africa containing peridotite, in which diamonds are formed. It is named after the town of Kimberley in South Africa where an 83.5 carat diamond was discovered in in 1871. Kimberlite pipes are vertical structures in the Earths crust. Kimberlites are an important source of primary diamonds. Many kimberlite pipes also produce rich eluvial or alluvial diamond placer deposits but only 1 out of 200 kimberlite pipes contain gem quality diamonds..
Hearts And Arrows Diamonds
Hearts and Arrows Diamonds: Round brilliant cut diamonds with ideal proportions, polish and symmetry become "Hearts and Arrows" diamonds. These stones display a visual pattern of 8 hearts looking down through the pavilion and 8 arrows when viewing the stone in the table up position. A special viewer (Hearts & Arrows Gemscope) is used to show this effect. .
EGL USA

EGL USA versus EGL International or EGL Israel

EGL USA is not affiliated with other EGL labs (Example: EGL, EGL International, EGL Israel, EGL Belgium, EGL Turkey, etc...) outside of North America.

There are other labs outside of North America which are using same name such as EGL Israel or EGL International (or even some websites call them only EGL) are not part of EGL USA.

Unfortunately EGL USA is in a legal dispute with EGL International or EGL Israel which has been flooding the market with diamonds that have not been graded as stringently. When purchasing an EGL graded stone, be sure to insist upon EGL-USA only unless you and your jeweler are able to scrutinize the stone in question very well and be assured it is as advertised. Any EGL that does not have an labodiam logo can sometimes have a 2 or even 3 grades lower in the color and clarity grades. EGL USA is far stricter compared to other EGL locations. Please visit www.labodiam.com for more information or call EGL USA at (877) 893-8593.

Each consultation of appraisal issued by the EGL USA lab states "A member of the EGL USA Group" and certificate numbers are preceded by either "CA" (Canada) or "US" (United States), to provide consumers the assurance that their certificate has been issued by a member of the EGL USA Group.

See a sample of an EGL USA Certificate below

EGL USA Certificate



See a sample of an EGL International / Israel Certificate below

 

EGL International or Israel Certificate

 

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EGL USA Online Results
You can check your EGL USA Online Results by visiting EGL USA at www.labodiam.com, then click on Online Results on the left hand menu. On the Report form box enter your 8 digit Certificate number with a capital D (case sensitive) at the end like so ######04D (type in your actual certificate numbers + D). Important, make sure that there are no spaces before or after the certificate numbers+D otherwise the correct diamond information will not come up. Then click on the submit button beside the Report form and The next page will show you the complete information that your stone has in the EGL USA database..
Length To Width Ratio

Diamond Shapes and Ratio

Shape
The external surface or outline figure of a specific diamond is called the shape of that diamond. Following are the shapes or figures of diamonds: Round, Princess, Asscher, Emerald, Cushion, Radiant, Heart, Marquise, Pear, Oval and Triangle.

Ratio
The proportional relation between length and width of a diamond is called the ratio of that diamond.

Example: Princess cut Diamond
Measurement: 6.25 - 6.05 x 3.77 mm
Measurement: Length - Width x Depth
Length-to-width ratio: Length / Width
           = 6.25 / 6.05
           = 1.03 (This will look perfectly square to the eye)

Following ratio shows the most appealing for that shape however, personal preference prevails, and some may prefer a shorter, wider outline; or longer, thinner shape.

 

ROUND CUT Diamond is the most preferred diamond shape as it is most classic and most sparkly shape. The round-brilliant cut is the most visually brilliant because of its 360-degree symmetrical shape and has the most facet count (57 facets: 58 with a culet) than other shapes, therefore it reflects most of the lights that goes in from more angles. Round-brilliant diamonds are the only shape to have this ideal proportion defined. Stone in this highest cut grade exhibit a perfect "Hearts & Arrows" pattern. With other diamond shapes, having lower color grade and clarity usually means giving up some of the beauty of the stone. Because a round-cut diamond gives out higher levels of brilliance and fire, it will offer much of the same pleasant appeal even if it has a lower color, clarity, or cut.

Length-to-width ratio of Round cut Diamond determines how a diamond will look like when viewed from above. For round shaped diamond, look for a length-to-width ratio between 1 and 1.02.

round cut

PRINCESS CUT Diamond is the second most popular shape next to round. This cut is the best option to have a square shape diamond but still having the same brilliance as round shape. To protect the 90 degree pointed corners of princess cut diamonds, V-shaped prong is used as its setting. In choosing Princess cut diamonds, you have to consider how square or rectangular the stone to ensure the outline of the stone when it is set on a setting. Some are perfect 1.00 or 1.10 ratio (length to width). For rectangular shape the ratio would be 1.50 to 2.00. In terms of value, the square is more expensive than rectangular princess cut.

Length-to-width ratio of Princess Diamond determines how a diamond will look like when viewed from above. For round shaped diamond, look for a length-to-width ratio between 1 and 1.1. Table should be between 65-80% and the depth between 65-75%.
 

princess cut

EMERALD CUT Diamond can be rectangular or square in shape and have beveled corners and step-cut facets. This shape really shows off the clarity of a diamond and can vary in the rectangularity. The length to width ratio will allow you to find the shape you are looking for.

For a traditional Emerald cut, look for a length to width ratio between 1.30 and 1.60. For a pleasant looking emerald cut diamond, the table should measure between 60-75% and depth between 53-70%.

 
emerald cut

ASSCHER CUT Diamond often called the square emerald cut, has cropped corners and was designed in 1902 by the Asscher Brothers of Holland.

The length to width ratio should be between 1.0 and 1.1. The table and depth percentage should measure the same as an emerald, between 60 - 75% and 53 - 70% respectively.

asscher cut

OVAL CUT Diamond has stunning brilliance, due in large part to its facets, which are similar to those in a round diamond. The length can accentuate long, slender fingers. It was invented in the early 1960’s.

For an eye catching and beautiful oval diamond, the length to width ratio should be between 1.4 and 1.6. In this case, the table should measure between 53 - 62% and depth between 60 - 70%.

oval cut

MARQUISE CUT Diamond is elongated with pointed ends. It was inspired by the smile of the Marquise de Pompadour and created for France’s Louis XIV, who wanted a diamond to match it. The length of the marquise can also make fingers appear longer and more slender.

When looking for a marquise shaped diamond, the length to width ratio should be between 1.6 and 2.25 and table and depth percentages between 53 -60% and 50 - 65% respectively.

marquise cut

PEAR CUT Diamond is a combination of oval and marquise cuts. The sparkling teardrop has good proportions and refracts the light well. This Pear Shaped Diamond looks best set as a pendant or pair of pear diamond earrings.

For a pear shape, the length to width ratio should be between 1.40 and 1.75. The table percentage should measure 53 - 60% and depth percentage 50 - 65%.

pear shape

RADIANT CUT Diamond is cut in the shape of a rectangle with beveled corners. Radiant cut diamonds facets are cut into a pattern that gives this diamond the unique appearance of cracked ice. Radiant cut diamonds can vary in their degree of rectangularity.

For a square radiant, look for a length to width ratio between 1.00 and 1.10. For a rectangular radiant, the length to width ratio should be between 1.50 and 2.00. Regardless of how rectangular the radiant is, the table should be between 65 - 80% and depth between 65 - 75%.

radiant cut

HEART CUT Diamond may be hard to find, but it is considered the most sentimental of all the diamond shapes. It is important to find a heart diamond with even lobes and a well-defined outline. Because its shape is very close to that of a round, it has beautiful brilliance.

The length to width ratio for a well-proportioned heart-shaped diamond is between 0.90 - 1.10. The depth of a heart-shaped diamond should be between 50 - 63% and the table between 53 - 65%.

heart shape

CUSHION CUT Diamond is an antique cut and is also referred to as Pillow cut or the Candlelight diamond. Cushion cut diamonds have larger facets and rounded corners than most cuts so as to increase their sparkle under candlelight.

For a cushion shape, the length to width ratio should be between 1.0 and 1.3.Table should be between 65-80% and the depth between 65-75%.

cushion cut

The TRIANGLE DIAMOND, first designed in Amsterdam, is cut into the shape of a wedge. The corners of the triangle cut diamonds may be pointed or rounded and the body will vary depending on the stone’s characteristics and the cutter’s preference.

triangle shape
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Consignment Option
LabODiam also offers consignment option on most of our Jewelry to our clients with a deposit which will be held temporarily from their debit / credit card. This option allows our clients to have the item in their possession for 3 days on consignment to study and examine the item and make sure that the item meets their expectations as far as design and quality.

After the clients decision about the item, they can either keep the item or send it back to us for further adjustments. Upon our receipt of the items back from our clients, the deposit will be immediately credited back to your debit / credit card. All the proper shipping / insurance materials will be supplied by LOD.

To open an account, click on the My Account button at the top right hand corner of any page of our website. Click on the Join Now link to create your account.

Once you have created your account, type your Email and your password to access your newly opened account in the login page.

Once you have put the items in your shopping cart, you will be directed to checkout and process your credit card. The total amount will be withheld until you inspect and study the above item. The item will be due back to our office within one week. Special packaging and complete instructions will accompany the item.

After receiving the ring back in our office, your complete credit will be applied back to your debit / credit card. If you desire to keep the ring, your desired center stone will be set on the ring and reshipped back to you.

Note: A $20 shipping charge will apply for the shipment of the consignment items.

Frequently Asked Questions :

Q: Is it possible to request multiple diamonds and/or rings for the consignment option?
A: Yes, it is possible.

Q: I would like to see several of your rings and diamonds side-by-side. Would the charge be more than $20 for this?
A: Shipping charges would be max of $25 but your security hold deposit will be increased as the total amount increases.


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Rhodium
Rhodium is an expensive alloy commonly applied as a hard protective coating over white gold. This coating makes the white gold metal even whiter and prevents tarnish. 18 and even 14 karat white gold have a very light hint of yellow. In order to make a white gold match the white brilliance of platinum, most if not all white gold jewelry is coated with Rhodium. This rhodium coating will fade off for some period of time (normally 3 to 6 months). It is possible to replate your white gold jewelry to regain the luster of new rhodium. We at LabODiam offer a no cost lifetime polishing and replating of Rhodium of any white gold jewelry purchased from us. All you need to do is give us a call and send us the item (fully insured registered mail) normally after a year then we will replate your white gold jewelry with rhodium. Please include a $20 check for the return shipment..
Alternative Shipping Address
Alternative shipping address: If you prefer, we can ship your order to an address other than your billing address, or If you will not be home to sign for your order (except P.O. Box). As a security precaution, we require that your alternate shipping address be on file with your credit card company. This step helps protect you from fraudulent charges to your credit card. To help expedite your order, simply call your issuing bank and provide them with your alternate shipping address. .
Crown

Top portion of the diamond, the measurement from the Girdle (center of the diamond) to the Table (top of the diamond).
 

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Insurance
Personal Jewelry Insurance through Jewelers Mutual Insurance Company

Once you've chosen a beautiful piece of jewelry, your next decision should be how you will insure it against loss, theft, damage, and mysterious disappearance. The Personal Jewelry Insurance program from Jewelers Mutual Insurance Company offers comprehensive coverage at affordable prices. They have specialized in insuring jewelry and jewelry businesses since 1913.

Visit Jewelers Mutual's Web site at www.InsureYourJewelry.com or stop by our store for a brochure and application. If you have any questions about the insurance coverage or how to obtain Personal Jewelry Insurance, contact a customer service representative, toll free, at (888) 884-2424.

Must be a U.S. resident age 18 years or older to apply. Jewelers are not licensed agents for Jewelers Mutual Insurance Company and cannot sell or recommend insurance. Jewelers Mutual is an alternative to other insurance companies you may be considering. Insurance coverage is not guaranteed, subject to underwriting guidelines and application approval..
Information regardng CVD

Gem-Quality Synthetic Diamonds Gem-quality synthetic diamonds are more available in today’s jewelry marketplace than ever before, causing both interest and concern among jewelers about the material’s nature and whether it can be identified by gemologists or gemological labs.

HPHT-grown synthetic diamonds are now available in the gem and jewelry marketplace in a wide range of colors, as evident from this attractive synthetic yellow diamond jewelry (1.00 to 1.25 cts) provided by Gemesis Corp. and these loose synthetic diamonds (each under 1 ct) from Lucent Diamonds and Chatham Created Gems. The colorless diamonds are natural.

GIA has studied synthetic or 'man-made' diamonds extensively over the past 30 years, and we know a great deal about how they’re produced and can be recognized. While synthetic diamonds are lab-grown or factory produced, their chemical and physical properties correspond very closely to those of natural diamonds.

Some people might refer to synthetic diamonds as imitations or simulants, but this is incorrect. Imitations like cubic zirconia or synthetic moissanite—which only look like diamond—have very different chemical and physical properties. This allows trained gemologists to recognize them readily. However, synthetic diamonds are much harder to detect.

 

A wide variety of natural, synthetic, and color-treated gem diamonds are now available in the marketplace. Because they differ greatly in commercial value, proper identification is vital for both valuation and disclosure to consumers at point of sale.

In some cases a trained gemologist can recognize these synthetic and treated diamonds by using standard gem-testing equipment. In other instances, positive identification must involve testing the diamond using advanced scientific instruments at GIA. At GIA we have created a large database of information on the gemological properties of diamonds of all kinds, which we use to help develop additional means of diamond identification.

HOW DIAMONDS ARE CLASSIFIED BY TYPE

Beginning in the 1930s, scientists began to recognize that certain kinds of diamonds displayed similar features. They grouped the diamonds into two main categories called type I and type II based on differences in transparency under ultraviolet radiation. Scientists were able to further divide type I and type II diamonds into two subcategories by the arrangement of carbon—and impurity—atoms in the diamond structure. In 1959 they discovered that nitrogen was the principal chemical impurity in diamond and that while type I diamonds contained this impurity, type II diamonds did not.

This diagram shows a simplified version of the diamond type classification system. Type I (top row) and type II (bottom row) diamonds can each be divided into two subcategories based on the arrangement of carbon (and impurity) atoms in the diamond structure. C = carbon atom, N = nitrogen atom, and B = boron atom. Diamond type can be determined quickly with a scientific method called infrared spectroscopy.

The vast majority of natural diamonds are what scientists call type Ia. Type Ia diamonds contain plentiful nitrogen in clusters or pairs. This kind of diamond cannot be grown artificially. Type Ib diamonds contain scattered and isolated nitrogen atoms that are not in pairs or clusters. Type Ib diamonds are rare in nature. Type IIa diamond contain almost no nitrogen, while IIb diamond contains boron.

Synthetic diamonds correspond to types Ib, IIa, and IIb, all rare categories among natural diamonds.

At GIA type I and type II diamonds can be distinguished by the latter’s transparency under short-wave ultraviolet radiation, and both types can be definitively separated by infrared spectroscopy (The “Type” Classification System of Diamonds and Its Importance in Gemology, Gems & Gemology, Summer 2009, Vol. 45, No. 2).

Type
(Color)
Natural HPHT
Synthetic
CVD
Synthetic
Ia (near-colorless) Common --- ---
Ib (yellow) Rare Available Rare
IIa (colorless) Rare Available Available
IIb (blue) Rare Rare Rare

This table illustrates the relative abundance of the natural diamond types and the two kinds of synthetic diamonds. Most synthetic diamonds are either type Ib or type IIa. Table updated Nov. 2018.

DIAMOND GROWTH

Natural diamond crystals formed millions—sometimes billions—of years ago deep in the earth, at depths of 100 miles (160 km) or more, and were brought up to the surface much later by explosive volcanic eruptions. These eruptions formed narrow vertical pipes of an igneous rock called kimberlite. Kimberlite pipes are mined to recover the diamonds, and the ore is mechanically broken down to free the crystals. The amount of diamond in kimberlite is very low—perhaps one part per million—so miners must process large amounts of ore to recover the diamonds.

Natural diamond crystals (left) show typical rounded octahedral shapes that are the consequence of conditions deep within the earth. They’re brought to the surface by volcanic eruptions that form kimberlite pipes (center). The ideal crystal shape of a natural gem diamond is an octahedron (right). Diamond growth takes place on the eight crystal faces.

Natural diamonds grow under a range of temperature and pressure conditions. The temperatures are higher than those used to grow synthetic diamonds. At high temperatures, diamonds grow as octahedral crystals, but in the lower temperatures of the laboratory, they grow as crystals with both octahedral and cubic faces. The great age of natural diamonds means that the nitrogen impurities in most diamonds have had time to aggregate into pairs or clusters, making the vast majority—over 95 percent—type Ia.

Synthetic diamonds are grown over a very short time—several weeks to one month or more—under conditions different from natural diamond formation deep in the earth. Because of the very short growth period, the shape of a synthetic diamond crystal is very different from that of a natural diamond.

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