GIA’s services and instruments have grown in importance and impact as new gem treatments and laboratory-grown gems have entered the market.
Read MorePresents a group of corundum standards developed by GIA to improve the accuracy and efficiency of its laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) instruments.
Read MoreCompares the image quality provided by real-time microradiographic imaging (RTX) units fitted with two different detectors: an image intensifier (II) and a flat panel detector (FPD).
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Enter a world not well-known in the West—the world of the maharajas and their jewellery, coveted by the modern-day moguls of business, entertainment and royalty. See the fantastic works of art made today in the form of enamelled Kundan meena jewellery and the regal look of polki diamonds.
Read MoreJaipur, India, is a leading emerald cutting and trading centre for the global gem and jewellery industry. See inside the industry with a GIA field team, and learn the intricacies of a business seldom seen by the public or most members of the industry.
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GIA field gemmologists are a different breed. When Andy Lucas, GIA manager of Field Gemmology in Carlsbad, decided to take some holiday time, he didn’t make for the usual destinations. No beaches, ski resorts or cosmopolitan cities. Lucas instead headed off to Afghanistan, lured by deposits of fine emeralds.
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An overview and commentary on the 2012 Journal of Gemmology article, “Flux-grown synthetic alexandrites from Creative Crystals Inc.”
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The third in the series, "Sapphire: A Crystal With Many Facets," this article looks at various emerging applications for synthetic sapphire.
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The second in the series, "Sapphire: A Crystal With Many Facets," this article looks at several advanced growth techniques.
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How contrast patterns can increase perceived brightness and optimise a gemstone's appearance.
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