Colour refers to the natural tint inherent in white diamonds. In nature, most white diamonds have a slight tint of yellow. The closer to being “colourless” a diamond is, the rarer it is. The industry standard for grading colour is to evaluate each stone against a master set and assign a letter grade from “D” (colourless) to “Z” (light yellow).
Frequently Asked Questions
White diamonds are given a colour grade of D (colourless) to Z (light yellow). Tiffany only accepts engagement diamonds in the “colourless” and “near colourless” range on a diamond colour scale. For engagement diamonds, Tiffany only accepts D, E, F, G, H and I colour diamonds. Fancy colour diamonds such as yellow or pink diamonds have their own colour grades.
Among white diamonds, D colour diamonds are of the highest grade. D colour diamonds are in the "colourless" range on a diamond colour scale along with E colour diamonds and F colour diamonds. Fancy colour diamonds such as yellow or pink diamonds have their own colour grades.