Colour


In terms of colour, the finest white diamonds (as opposed to fancy coloured diamonds) should be as close to colourless as possible. Colour grading as defined by the GIA is classified by letters of the alphabet, the best being D, colourless, and continuing...

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In terms of colour, the finest white diamonds (as opposed to fancy coloured diamonds) should be as close to colourless as possible. Colour grading as defined by the GIA is classified by letters of the alphabet, the best being D, colourless, and continuing through G to J, near colourless, right down to Z. Colour gradations for each letter are subtle but clearly defined to the professional eye. The letter D was chosen to represent the top white diamond colour, as other pre-existing, imprecise and confusing classifications had used letters A, B and C among other labels.

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