The Gemstone Blog – Tagged "Color Grading" – GemSelect AU
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The Gemstone Blog — Color Grading

How Colored Diamonds are Graded


Posted by MICHAEL Hart on

<p>How Colored Diamonds are Graded</p> <p> </p>

GIA developed the Colored Diamond Grading system in the 1950s. It was originally developed for industry professionals however it caught on with consumers and it is now the industry standard to which most fancy colored diamonds are graded. This post describes the process for grading Fancy colored Diamonds and key points to keep in mind when working with colored Diamonds. A diamond’s color grade is based on its tone and saturation. On the D-Z color scale, diamonds can be graded colorless, near colorless, faint, very light and light. Colorless is the most valuable in the D-Z range. If a diamond's...

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