Don’t judge a yellow gem by its colour alone. A variety of gemstones also come in shades of yellow, from diamonds to citrine to garnets.
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GIA scientists recently presented their latest research on diamond tagging and the cause of grey-blue-violet colour in diamonds.
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GIA researchers analysed more than 90,000 natural pink diamonds to better understand how these rare and beautiful diamonds formed and got their colour.
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Learn about the differences – and similarities – between natural and laboratory-grown diamonds, and how GIA’s researchers and grading laboratories can tell the difference
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Summarises data collected on more than 15,000 natural blue/grey/violet diamonds examined by GIA during the last decade and examines the mechanisms that produce this colour range.
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Characterises a suite of 40 natural brown to black diamonds from this deposit so that they can be distinguished from suspected treated black diamonds.
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Explores an exceptional family of diamonds, referred to as “CLIPPIR” (Cullinan-like, Large, Inclusion-Poor, Pure, Irregular and Resorbed), that formed in a super-deep environment.
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G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.
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Examines the last two decades’ advances in analysing and understanding the formation of natural diamonds, and their relation to the Earth’s formation.
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An examination of the gemmological and spectroscopic properties of CVD synthetic diamonds from Gemesis Corp.
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