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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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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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Explores statistical data and defining characteristics of gem-quality CVD synthetic diamonds examined by GIA since 2003.
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This type of pink pyrope garnet, believed to have been mined in Tanzania, shows a distinct colour-change phenomenon resulting from its unique chemical composition.
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More than 200 historically significant books housed in the GIA Library have been digitised and made available for free.
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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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Revival jewellery is inspired by the past – and wearing it connects us to the rich history of the beginning of civilisation.
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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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