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Color is the amount of yellow tint a diamond displays. The very best color for a diamond is no color at all. The reason is simple: absence of color means no conflict to dim the beauty of the natural light entering the stone and breaking into its spectral elements – brilliant reds, blues, and violets.

Diamond Color grades are letters of the alphabet starting with “D†and ending with “Zâ€. D through F are all considered “colorlessâ€, G-J are “white†or “near colorlessâ€. In K-L stones, you can usually see yellow tint face up, and below L you can see a lot of tint. Here is the entire GIA color grading scale:


The only way to grade diamond color is to have the diamond loose from the mounting and to compare it to a color master grading diamond. A color master is a special diamond from GIA certified for use as a standard in color grading. A good store will have a full set (usually 5-7 diamonds) of color masters and be able to show you your diamond next to the master it matches.

Rule: Ask to see your diamond loose next to the appropriate color master diamond if you would like to verify its color.

Note: Certified color-master grading diamonds have to be natural diamonds and cannot be diamond simulants (CZ’s).