Round brilliant diamonds are the only shape that receive a cut grade designation. A diamond can have gorgeous color, flawless clarity, and a large carat weight, but still be unattractive and ...

For the first time, gemologists and jewelers will have access to an innovative solution for diamond color grading.

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while volcanological principles are now used to more effectively assess diamond grades and diamond values. Bristol’s expertise in geological mapping has also given De Beers further insights as to ...