Champagne diamonds are naturally colored diamonds that are produced in a wide range of colours from light straw to rich cognac.The 4C's of colour, cut, clarity and carat weight apply to colored diamonds just as they do to colorless diamonds except the intensity of colour, not lack of it, plays a greater part in the valuation.
Argyle Diamonds created the following scale specifically for champagne diamonds. The diamonds are graded on a C1-C7 colour scale. C1 and C2 represent light champagne, C3 and C4 medium champagne, and C5 and C6 dark champagne. The fancy cognac diamond is graded C7.
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