Find out about how GIA is addressing industry concerns over undisclosed laboratory-grown and simulated fancy melee being mixed in with natural fancy melee.
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GIA’s services and instruments have grown in importance and impact as new gem treatments and laboratory-grown gems have entered the market.
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Chow Tai Fook and GIA offer secure digital blockchain reports that document the diamond journey and grading information in one place.
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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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A look at the mining and distinguishing characteristics of this naturally vibrant blue sapphire.
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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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Revival jewellery is inspired by the past – and wearing it connects us to the rich history of the beginning of civilisation.
Read MoreCompares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
Read MoreCompares PL spectroscopy data of 48 emerald samples from three countries to evaluate the usefulness of the technique in geographic origin determination.
Read MoreDr James Shigley, GIA distinguished research fellow, is one of the foremost experts in diamonds and their identification. In this presentation recorded at the 2017 JCK Las Vegas show, he shares the latest developments about HPHT and CVD synthetic diamond
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