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Diamond Colour

After diamond cut, diamond colour is the second most important characteristic to consider when choosing a diamond. The highest quality diamonds are colourless, while those of lower quality have noticeable colour, which manifests as pale yellow in diamonds.

The Gemmological Institute of America (GIA) grades diamond colour on a scale of D (colourless) to Z (light yellow or brown). D-Z diamonds are also known as white diamonds, even though most diamonds, including H colour diamonds and G colour diamonds, have varying amounts of colour.

Diamond Colours According To The Diamond Colour Chart

The GIA diamond colour scale is the leading industry standard of diamond colour grading. Before this was the standard, other colour grading scales used A, B and C, so GIA started their scale at D to avoid confusion.

There are six categories on the GIA diamond chart, with colour grades that range from absolutely colourless to light in colour. Diamonds rated D are the most devoid of colour and very rare, whereas G colour diamonds and H colour diamonds are near colourless, and since they’re priced lower they are excellent value diamonds. The more you move down the colour chart, the lower the colour grade is, and the more noticeable the light yellow hue becomes.

D Diamond Example

D Colour Diamonds (Absolutely Colourless)

D colour diamond is the highest grade and is extremely rare—the highest colour grade that money can buy. Eight percent of customers choose a D colour diamond.

See D Graded Diamonds

Diamond Colour Buying Tips

If you're looking to buy fine diamond jewellery such as an engagement ring, it's important to understand how diamond colour affects price. Here are a few buying tips and things to know about diamond colour.

Shop Blue Nile Diamonds by Colour Grade

Blue Nile offers the top tiers of colour in diamonds from Colourless (D-F) to Near Colourless (G-J) to a Faint Colour (K).

  • to assure that your diamond will be high-quality and beautiful.
  • to assure that any natural colour present is nearly undetectable to the naked eye.
  • provide a wide variety of options whether you want maximum sparkle or to maximise your budget

Colourless Diamonds

Near Colourless Diamonds

Faint Colour Diamonds

White Diamonds vs. Coloured Diamonds

When is colour a good thing? When it refers to the rainbow spectrum of colours – red, orange, yellow, green, blue, pink, purple, and more – that diamonds come in. These are known as Coloured Diamonds. Only one in every 10,000 diamonds possess natural colour, and the more intense the colour, the more rare and valuable the diamond. Coloured Diamonds are graded on a separate diamond colour scale and can be even more valuable than white diamonds.

Learn More about Coloured Diamonds