F colour diamonds

F is a colourless grade on the D to Z colour scale. The last colourless grade. Still no colour you can see.

Grade: 3rd of 23, in the colourless group
What you see: The most chemically pure diamonds on the scale.
In RXXO: 1 in 290 diamonds

F in RXXO

15diamonds like this in RXXO right now

Questions

Is F a good colour for a diamond?

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

How rare is F colour in RXXO?

About 1 in 290.

What is the difference between F and G colour?

One step on the D to Z scale: F has a touch less colour than G. 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.