The diamond colour grading scale varies from totally colourless to light yellow. The differences between one diamond colour grade and another are very subtle and difficult to distinguish.
D-F: Colourless: perfect or almost perfect colour.
G-J: Near colourless: good to very good colour and this diamond may ’’face up’’ colourless when mounted into a setting, especially in white gold or platinum.
K-M: Light but noticeable yellow or brown tint. Not recommended for larger diamond stone purchases, especially in engagement rings.
Out of the 4 C’s, colour and cut are the two most important characteristics of a diamond. Do not compromise on colour.