Simon Clarke Jewellery

Based upon the absence of colour, a chemically pure and structurally perfect diamond has no hue, like a drop of pure water, and consequently, a higher value. Colour is graded using a alphabetical grading scale; D-to-Z.  This diamond color-grading system measures the degree of colorlessness by comparing a stone under controlled lighting and precise viewing conditions.

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Many of these colour distinctions are so subtle that they are invisible to the untrained eye; however, these distinctions make a very big difference in diamond quality and price.