D colour diamonds

D is a colourless grade on the D to Z colour scale. The top grade: no colour at all.

Grade: 1st of 23, in the colourless group
What you see: The most chemically pure diamonds on the scale.
In RXXO: 1 in 300 diamonds

D in RXXO

12diamonds like this in RXXO right now

Questions

Is D a good colour for a diamond?

D is colourless: the most chemically pure diamonds on the scale.

How rare is D colour in RXXO?

About 1 in 300.

What is the difference between D and E colour?

One step on the D to Z scale: D has a touch less colour than E. Side by side, the difference is very hard to see without master stones.

RXXO numbers are the odds every mint draws from. Updated 8 October 2026.