Colour

Diamond colour is graded by how white or colourless a diamond is.

The colour of a diamond varies from colourless to light yellow, and the grades are D to Z. The D-coloured diamond is the most colourless diamond, while a Z-coloured diamond contains a noticeable brown or yellow tint.

D coloured diamonds are the most prized and valuable.

D to F: Colourless

G to J: Near Colourless

K to M: Faint Yellow

N to R: Very Light Yellow

S to Z: Light Yellow

Fancy colour diamonds are diamonds with colour that extends beyond the Z range. Fancy colour diamonds are extremely rare, compared to regular diamonds, and they come in red, green, purple, and orange (the rarest colour), pink and blue (less rare), yellows and browns (the most common).

Common fancy colours are typically less valuable than rarer ones. In fancy colour diamonds, the colour is the most significant value factor. Even diamonds with many inclusions and a low clarity grade are highly valued by connoisseurs if they exhibit a beautiful colour.