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 in New York recently had the opportunity to examine one of the most interesting and unique diamond crystals ever found.
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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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GIA researcher analyses and confirms that De Beers’ Lightbox diamonds are grown using the chemical vapour deposition process.
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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 the akoya cultured pearls produced on the eastern shoreline of Australia using native Pinctada imbricata fucata molluscs.
Read MoreCompares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
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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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Describes the occurrence of iridescence, and the role of differential etching, in quartz crystals from India’s Jalgaon District.
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