The diamond color grading scale ranges from colorless to light yellow. The difference between the color grades are very subtle and difficult to distinguish.
D-F: Considered colorless as the human eye has difficulty separating these colors without comparison diamonds with some level of color.
G-J: Near colorless as in most cases when the diamond is set into a mounting, it appears colorless especially in the G through I color ranges.
K-M: Faint colors of yellow or brown are recognized.
N-R: Very light colors of yellow or brown are easily recognized.
S-Z: Light colors of yellow or brown are obvious. The depth of color is just short of being classified as a fancy color.
Of the four C's, color and cut are considered the two most important characteristics of a diamond. We suggest not to compromise on color by selecting a color of H to I or better.