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Fancy Colour Diamond

Dazzling brilliance. Captivating colour. The planet’s most valued gems are fancy colour diamonds.

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Radiant Cut

The radiant cutting style helps intensify a fancy coloured diamond’s colour.

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Beyond Z

Diamonds with more yellow than GIA’s Z grade are considered fancy colour.

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Colour is Value

Subtle colour differences impact the value of a fancy coloured diamond.

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Octahedral Form

Beautifully formed octahedrons might become collectors' treasures.

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Crystal Faces

Diamond crystal faces show cutters how to get the best weight retention.

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Uneven Colour

The colour in rough diamond might not be evenly distributed in the rough.

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Buyer's Guide

With fancy colour diamonds, the rarest, most valuable colours are saturated pinks, blues and greens. Even very slight colour differences can have a big impact on value.


Submit your gemstone through your local jeweller. 


Verify the information on your report matches what is archived in the GIA report database.

What to look for

0.49-ct Blue Diamond
The most prized hues are red, pinks, blues and greens.

Compared to fancy yellows and browns, diamonds with a noticeable hint of any other hue are considerably more rare. Grading fancy colour diamonds is complex and specialised, and it takes highly trained laboratory graders to complete the process accurately.

Fancy Colour Diamond
Fancy Colour Diamond Clarity

Colour is the dominant value factor. Even diamonds with numerous inclusions that result in a low clarity grade are prized by connoisseurs if they display attractive face-up colour. Of course, inclusions that threaten the gem’s durability can lower a fancy-coloured diamond’s value significantly.

Round brilliant fancy colour diamond
Fancy shapes can boost the intensity of colour.

Cutters have discovered that certain styles—typically mixed cuts like the radiant—can intensify yellow colour in diamonds that are towards the lower end of the D-to-Z colour-grading scale. When carefully fashioned as radiant cuts, many yellow-tinted stones can become fancy yellows when viewed face up.

Rare Reddish-pink Diamond
Even sizes under a carat are very valuable.

As with diamonds in the normal D-to-Z color range, large fancy colour diamonds are rarer and more valuable than small ones.

Fancy Colour Diamond Quality Factors: The Comprehensive Guide