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Independent Grading Of Fancy Diamonds

Coloured diamonds (or what jewellers call "fancy diamonds") are graded by the GIA in much the same way as all other diamonds but with a particular focus on the intensity and vivacity of colour.

The GIA system for colour-grading fancy diamonds is designed to accommodate the fact that not all coloured diamonds have the same depth of colour. For example, yellow diamonds occur in a wide range of saturations, while blue diamonds do not.

Compared to fancy yellows and browns, diamonds with a noticeable hint of any other hue are considerably more rare. Even in light tones and weak saturation, as long as they show colour in the face-up position, they qualify as fancy colours.

Fancy coloured diamond colour chart - Pobjoy Diamonds

Red, green, and blue diamonds in dark tones and moderate saturations are extremely rare.

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Pink diamonds - Pobjoy Diamonds