The Predominant Colour

The appearance of a diamond to be classified as red, green, blue, violet, or anything in between. Colour description of a diamond can be a combination of two or more colours. When reading the colour description of a diamond on the GIA report the final colour hue is the dominant colour and any other colour description before it is a modifier.

There are eight dominant colour hues that are used in the GIA grading system and include: Red, Orange, Yellow, Green, Blue, Violet, and Purple. The red is further defined by using Pink as the dominant colour completing the scale to eight colours. Brown and grey are not considered in the same context as the dominant eight and are often used as modifiers for specific hues, but can stand alone with a fancy designation.