A new find of rose quartz from Madagascar contained some unusual inclusions.
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Inclusions visible to the naked eye are common in almost all varieties of quartz apart from rose quartz.
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Laser confocal microscopy, a very reliable method of revealing surface micro-features, is used on an HPHT synthetic diamond to reveal growth structures.
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A bangle is an example of the misconception that B jade is only impregnated by resin, when in fact wax-impregnated jadeite is also considered B-jade.
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A transparent greenish-blue pear-shaped gemstone, reportedly from Madagascar, is discovered to be a Maxixe-type beryl.
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A black star sapphire produced from eastern Thailand, showing both golden and silver rays, is studied at GIA’s Bangkok lab.
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A report from the eighth annual International Gold Conference, held in New York on 12-13 April 2018.
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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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A jade bracelet contains unusual fillers, used to create a smooth surface.
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The DiamondView instrument is able to identify glass as the filler in a pair of heart-shaped rubies.
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