Tourmalines have a very complex chemical composition, and more than a dozen mineral species are recognised within this group.
Read MoreTourmalines come in a wide variety of exciting colours. In fact, tourmaline has one of the widest colour ranges of any gem species, occurring in various shades of virtually every hue.
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Betty Sue King shares her expertise at chapter meetings, on pearl trips and with donations to the Tucson auctions – all in support of the GIA alumni.
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Economists are recognising that the decline in middle-class purchasing power is directly affecting some consumer products – including jewellery.
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Rebecca Buys, GG, with a fulfilling career as a designer and appraiser, guides GIA alumni opportunities in San Diego, California.
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De Beers holds largest cycle (sight) in more than two years. Luxury sales have begun to rise again after a negative year.
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Karyna Sena, a third-generation gem and jewellery professional, infuses the rich tapestry of Brazil – and her joie de vivre – in each of her designs.
Read MoreA treatise on the design, display, care and repair of fine gemstones.
Read MoreFrom the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
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Once upon a time, gem cutting was a strict craft bound by centuries of tradition. Then Bernd Munsteiner (b. 1943) invented the fantasy cut.
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