Illustrated Guide

to the natural beauty and value of coloured diamonds

Blue (B)-bluish(b):

A perceived colour representing the sky on a clear day. Positioned on the spectrum between violet and green, blue may contain secondary colour modifiers such as blackish blue (bk-B), grayish blue (gy-B) and greenish blue (g-B). Alternatively, blue itself may occur as a secondary colour modifier as in bluish green (b-G), or bluish gray (b-GY). Popular names for mixtures of blue are: cornflower, indigo, ink, navy, sapphire and sea.