Diamond colour indicates the whiteness of the diamond, and refers to the presence of the amount of yellow or brown taints in a white diamond. Colour is determined by comparing the diamond to an internationally approved set of master stones. The grade of 'whiteness' or colourlessness begins with the highest rating of D for colourless, and travels down the alphabet to grade stones with traces of very faint or light yellowish or brownish colour.
•  D Exceptional White +
•  E Exceptional White
•  F Rare White +
•  G Rare White +
•  H White
•  I Slightly Tinted White
•  J Slightly Tinted White
•  K Tinted White
•  L Tinted White
•  M-Z Tinted Colour

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