Skip to content

The 4c’s Diamond Colour Guide

The 4c’s Diamond Colour Guide

Diamond colour guide – chart and grades

A diamond colour with the highest grade is the one with the least amount of colour. Diamonds grade as D indicates that it is colourless, and therefore extremely rare and valuable. Diamonds graded as E in colour, show minute traces of colour detected by an expert. An F grade indicates slight traces of colour. A stone graded G-H range is near-colourless, with traces of yellow generally visible only when compared with whiter diamonds. I to J are also near-colourless, only slightly detectable to the unaided eye. K-M,  begin to display noticeable colour.

 Colour Scale

Your Diamond Colour Guild

Colour differences in diamonds are very subtle. To grade diamonds, you have to have controlled lighting conditions. All compared against a master set of diamonds for accuracy. The presence of colour in a white diamond diminishes the diamond’s value.

This diamond colour guide is to help you with white diamonds, but you can get coloured diamonds too.

Diamonds come in an array of colours Red, blue, pink, purple and even green. This sort of diamond is known as fancy diamonds,  extremely rare so command a higher price.


Engagement Ring Settings

Colour becomes much harder to detect once the diamond is set in a ring and placed in an environment that contains colour (when grading diamond a white background is used in grading). For instance, an G coloured diamond may look as colourless as a D when set in a ring under normal lighting conditions, especially if the two are not compared side by side.

Another factor that affects a diamonds’s apparent whiteness is the colour of the ring itself. Yellow gold reflects a smal amounts of yellow into the diamondmaking it look less while. White gold or platinum setting make the colour in yellow diamonds stand out more.

Thank you for reading this

The 4c’s Diamond Colour Guide

If you need further help or have any questions

Call Us