A first-person account of diamond mining in Minas Gerais, Brazil, which has been a source since the early 1700s.
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Among the collection assembled by Dr Edward Gübelin are a number of uncommon gemstones from many worldwide localities.
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Dr James Shigley shares how GIA determines coloured stone origin and the mysteries of diamond origin.
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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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Circumnavigate the boreal reaches of the globe to explore gems from polar regions.
Read MoreLearn about the versatility of melee in jewellery design and how to design and engineer long-lasting jewellery using the GIA Quality Assurance Benchmarks.
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G&G Brief presents an overview of the content of the Autumn 2015 issue of Gems & Gemology.
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The "Sunstone Odyssey" series continues with a visit to the Dust Devil mine, a source of rough for many award-winning faceted gems and carvings.
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The diamond industry was slow to recover in 2016 and coloured gems got a welcome shot in the arm. Mixed signals leave no clear indicators for 2017.
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The past decade saw some impressive discoveries of diamonds and coloured stones.
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