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Diamond colour actually refers to the colourlessness of a diamond. Although many diamonds appear to be colourless, most exhibit at least hints of yellow or brown. The more yellow the stone, the less value. The colour of a diamond has a huge impact on its value. The most desirable diamond colour is actually the colourless grade.
The diamond colour scale was devised by the Gemological Institute of America (GIA) in the mid 1950's to regulate and define the colour spectrum of diamonds. The GIA proposed starting at D as the best and most colourless diamond available. Why D and not A ? well just in case anything better is ever found. The colour scale progresses through the alphabet from D until Z which is the most colourful diamond. The graphic below illustrates the GIA colour scale.
To help you choose the diamond colour that is perfect for you, we have collated a few top tips
For multi-stone items of diamond jewellery such as diamond earrings, diamond eternity rings, Multi-stone pendants etc. we provide a Austen Blake & EGL Jewellery Certificate of Authenticity which confirms the combined diamond carat weight and diamond quality for your peace of mind in the quality of your diamond jewellery purchase. As Multi-Stone Diamond jewellery has many diamonds, we offer a range of grading options like colour grades D-E, F-G, H-I. It is very difficult to source the specific grade diamond, when many diamonds need to match together exactly.
Fluorescence refers to a diamond's tendency to emit a soft colour glow when subjected to ultraviolet light (such as a "black light"). Roughly 30% of diamonds fluoresce to some degree.
A study performed in 1997 by the GIA found that the level of fluorescence has no widely perceptible effect on the colour appearance or transparency of diamonds when viewed table down (upside down). In the table up position, diamonds of Strong or Very Strong fluorescence appeared to have better colour than less fluorescent stones. The effect was most noticeable in the I-K colours.
The visible effects of faint to medium fluorescence are perceptible only to a gemmologist using a special UV light source.
Because the fluorescent glow is usually blue (which is the complementary colour to yellow) fluorescence can make diamonds of H-I colour appear up to one grade whiter. For this reason, H-I diamonds tend to sell at a slight premium when they possess Medium to Very Strong fluorescence. Overall, fluorescence should not be a major factor in the diamond purchase since its effects on appearance are negligible, if not slightly positive.
If you'd like to talk to an expert gemologist , or a member of our friendly Customer Care Team about choosing the perfect diamond color for you, please get in touch on 888-888-3959 888-888-3959 or enter into a Live Chat as you prefer.
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