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.

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 ...

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The shares of the recently-listed International Gemmological Institute (IGI) tumbled 10 percent to get locked in the lower circuit at Rs 366.25 apiece on March 3. This comes after the diamond grading ...