Light is the D-to-Z range from S to Z: a plainly visible yellow or brown tint.
In more detail
A Z is not a bad diamond, only one with a visible tint. A yellow or brown diamond with more color than the Z master stone leaves the scale. Then it can get a fancy color grade.
Related terms
- Very light (N–R): Very light is the D-to-Z range from N to R: a yellow or brown tint that is easy to see.
- Fancy color diamond: A fancy color diamond is a colored diamond with enough color for a fancy grade. To GIA, any diamond outside the D-to-Z scale is a colored diamond.
- Color grade: The color grade is a letter from D to Z for the yellow or brown tint of a near-colorless diamond. D is colorless and Z is light yellow or brown.