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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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 MoreNature gives us a brilliant palette of colour-changing leaves and a spectacular kaleidoscope of colourful sunsets during the autumn season.
Read MoreThe fashion trend of colourblocking can be found in the artistic combinations of colour in multicoloured gemstones known for their colour zoning or banding.
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The humble leaf has captivated jewellery designers for centuries and they’ve transformed it into enduring pieces of beautiful jewellery.
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G&G Brief presents an overview of the content of the Summer 2015 issue of Gems & Gemology.
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G&G Brief presents an overview of the content of the Spring 2015 issue of Gems & Gemology.
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Testing reveals the first synthetic nano-polycrystalline diamond (NPD) to be detected by a gem lab.
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Microradiography reveals wire fillings within a “pearl” created from two separate specimens.
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