In this study, the Bangkok laboratory examined five low-quality bead cultured pearls sourced directly from a local pearl factory and characterised their features before and after processing.
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Recently, GIA’s laboratory in New York had the opportunity to examine a fascinating pearl find and hear about an even more fascinating story.
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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 A-Z of Pearls”, with at least one pearl-related subject for each letter of the alphabet, was presented in Thailand recently.
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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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Escape to a warm-water paradise in your mind with these jewels that formed in the sea, are inspired by marine life and evoke the ocean’s essence.
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Collectors from around the world descended on Christie's Maharajas & Mughal Magnificence auction of the jewels from the Al-Thani Collection on 19 June.
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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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Looking for a gift for someone special? December’s birthstones offer a treat for every taste, style and personality – even if it’s not their birth month.
Read MoreThis collection of jewellery images illustrates how metalwork techniques showcase gemstone and jewellery designs.
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