Check out some of the most interesting and unusual diamonds and coloured stones submitted to GIA’s laboratories in 2019.
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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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GIA researcher analyses and confirms that De Beers’ Lightbox diamonds are grown using the chemical vapour deposition process.
Read MoreThe 187.63 ct rough diamond from Canada’s Diavik mine shows surprising reactions to ultraviolet light.
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A cape diamond examined in the New York lab shows rare yellow phosphorescence.
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Red fluorescence, rarely seen in natural colourless type IIa diamond, is observed at the New York lab.
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A summary of the content found in the Summer 2016 issue of Gems & Gemology.
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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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Review of Glitterati: Portraits and Jewelry from Colonial Latin America at the Denver Museum of Art.
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