Labodiam Dictionary
Labodiam dictionary of common loose Lab-Grown Diamonds and Lab-Grown Diamond jewelry terms in the industry and their meanings.
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Facet
A polished geometric surface on a Lab-Grown Diamond. A round brilliant-cut Lab-Grown Diamond or round full-cut diamond usually has 58 facets..
Fluorescence
Lab-Grown Diamond fluorescence* is a form of illumination that is created when a Lab-Grown Diamond is exposed to Ultraviolet (UV) light. Your Lab-Grown 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. Lab-Grown 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 Lab-Grown Diamond a slight hazy or oily appearance. *Important Note* *Lab-Grown Diamonds with a strong fluorescence are priced slightly lower than other Lab-Grown Diamonds. *Lab-Grown Diamonds with a Very strong fluorescence are priced Extremely lower than other Lab-Grown 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. .
Fancy Colored Diamond

Natural Fancy Yellow Color Lab-Grown Diamond

Diagram of Fancy Colored Lab-Grown Diamonds(Canary)

Range from Vivid to Light



Diagram of Non-fancy Lab-Grown Diamond
Range from Z - U
 

 

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

Beautiful yellow Lab-Grown 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 Lab-Grown Diamonds are more desirable than white Lab-Grown Diamonds, due to their warm color. In fancy Lab-Grown 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 Lab-Grown Diamonds.

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

Grading fancy color Lab-Grown Diamonds

Yellow or brown color Lab-Grown Diamonds having color more intense than "Z", as well as Lab-Grown Diamonds exhibiting color other than yellow or brown are considered fancy colored Lab-Grown Diamonds. These Lab-Grown 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 Lab-Grown Diamonds.
 

GIA colored Lab-Grown Diamond grading system

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

  Fancy Vivid Yellow- Vivid yellow Lab-Grown Diamonds are the rarest and most unique Lab-Grown 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 Lab-Grown Diamonds have richer color and quality. Values of this kind of Lab-Grown 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 Lab-Grown 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 Lab-Grown 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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Fancy Yellow Diamonds

Natural Fancy Yellow Color Lab-Grown Diamond

Diagram of Fancy Colored Lab-Grown Diamonds(Canary)

Range from Vivid to Light



Diagram of Non-fancy Lab-Grown Diamond
Range from Z - U
 

 

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

Beautiful yellow Lab-Grown 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 Lab-Grown Diamonds are more desirable than white Lab-Grown Diamonds, due to their warm color. In fancy Lab-Grown 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 Lab-Grown Diamonds.

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

Grading fancy color Lab-Grown Diamonds

Yellow or brown color Lab-Grown Diamonds having color more intense than "Z", as well as Lab-Grown Diamonds exhibiting color other than yellow or brown are considered fancy colored Lab-Grown Diamonds. These Lab-Grown 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 Lab-Grown Diamonds.
 

GIA colored Lab-Grown Diamond grading system

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

  Fancy Vivid Yellow- Vivid yellow Lab-Grown Diamonds are the rarest and most unique Lab-Grown 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 Lab-Grown Diamonds have richer color and quality. Values of this kind of Lab-Grown 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 Lab-Grown 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 Lab-Grown 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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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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