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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Webinars are an easy, informal way for GIA experts to share information and stay connected with the community of researchers and gem and jewellery lovers.
Read MoreGemmological photojournalist Robert Weldon shares the stories behind some of his favourite photos.
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Dr James Shigley shares how GIA determines coloured stone origin and the mysteries of diamond origin.
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Explore GIA’s collection of free, rare digital books and manuscripts that document the history of gems and jewellery.
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The phrase “light performance” gets a lot of loose use in the diamond trade, but what does it mean when someone is actually looking at a diamond?
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Russell Shor reflects on the people, gems and stories he’s encountered as he’s covered the industry over the years.
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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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The economic impact of the coronavirus in mainland China and Hong Kong. Plus, an update on the diamond market and gold jewellery.
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