Most gem quality Diamonds fall within a range from “D” (colourless) to “Z” (light yellow).
Diamonds that grade from “D” to “G” are considered white. The element that colours most diamonds is nitrogen and gives diamonds a tint of yellow. “D” Diamonds are colourless and the tint increases to “Z.
The colour of a Diamond is determined on the basis of a visual assessment by comparing it to a set of master diamonds under laboratory conditions. The differences between colours are very subtle and graded according to the International Colour Grading Scale. Diamonds awarded a ‘Grade D’ are colourless, extremely rare and the most highly sought after. Diamonds that fall after the ‘Z’ colour grading are referred to as fancy yellow.
Within the category of fancies an assortment of vibrant colours are available. With the exception of some natural fancy colours, such as blue, pink, purple, canary yellow or red, the colorless grade is generally the most valuable.
« Back to The Four C's