A category used to describe the amount or absence of color, typically yellow, within a diamond or other gemstone. A color grade describes the body color of a diamond and not the colors that can be seen coming from a Diamond. The AGS Diamond color grading scale consists of twenty three grades represented by the letters of the alphabet beginning with the letter D and subcategorized as follows: COLORLESS (D,E,F), NEAR COLORLESS (G,H,I,J), FAINT YELLOW (K,L,M), VERY LIGHT YELLOW (N,O,P,Q,R), LIGHT YELLOW (S,T,U,V,W,X,Y,Z)
The color quality of a diamond, expressed according to a scale of letters representing different grades of color. Crystal clear, or absolute lack of color, is the most desirable. These are often referred to as "white" diamonds.
One of the four value factors of a diamond. Diamonds are ranked on a scale from "D" (colorless) to "Z" (noticeable tint of color, typically yellow or brown). Diamonds with saturation greater than "Z" color are considered Fancy Colored Diamonds and are graded on a separate scale.