Despite the generally strong year for jewellery retail, the diamond industry continues to face problems with credit, patchy demand and soft prices.
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The US holiday season saw strong sales, but China continues to struggle. Plus: diamond market report and lab-grown diamond sales.
Read MoreThe building blocks are in place for a strong 2018 U.S. holiday season. Plus, diamond market updates and upcoming auctions.
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A project coordinated by GIA and the NGO Pact provides a valuable educational tool to women miners in Tanzania.
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Identifies 13 copper-bearing tourmalines, which have traditionally been assumed to be elbaite species, as liddicoatite.
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A coated Paraíba tourmaline is seen for the first time at a GIA lab.
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An update on Nigerian coloured stone production is obtained at the Tucson gem shows.
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Specimens presented as rubellite tourmaline rough are found to be resin imitations with lead inserts.
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The blue cap termination from a tourmaline crystal was preserved and polished, yielding a unique designer gem.
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Find out more about what causes a diamond to chip, and 8 tips on how you can avoid chipping your diamond.
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