Winter 2016 Gems & Gemology
WINTER 2016 VOLUME LII THE UARTERLY JOURNAL OF THE GEMOLOGICAL INSTITUTE OF AMERICA Jaipur’s Gem and Jewelry Industry The Earliest Gem-Quality Synthetic Emeralds A New Source of Danburite from Vietnam A Chart of Emerald Inclusions Winter 2016 VOLUME 52, No. 4 EDITORIAL 331 Emeralds and the Power of the Pink City Duncan Pay FEATURE ARTICLES 332 Jaipur, India: The Global Gem and Jewelry Power of the Pink City Andrew Lucas, Nirupa Bhatt, Manoj Singhania, Kashish Sachdeva, Tao Hsu, and Pedro Padua pg. 351 Examines Jaipur’s role as a colored stone cutting and jewelry manufacturing center, with profiles of 17 companies and their factory, trading, and retail operations. 368 Synthetic Emeralds Grown by Richard Nacken in the Mid-1920s: Properties, Growth Technique, and Historical Account Karl Schmetzer, H. Albert Gilg, and Elisabeth Vaupel Describes the chemical, morphological, and microscopic properties of the first gem-quality synthetic emeralds ever produced, offering a historical perspective on their development. pg. 371 393 A New Find of Danburite in the Luc Yen Mining Area, Vietnam Le Thi-Thu Huong, Laura M. Otter, Tobias Häger, Tim Ullmann, Wolfgang Hofmeister, Ulrike Weis, and Klaus Peter Jochum Reports on a recently discovered eluvial deposit of honey yellow danburite with excellent transparency. CHARTS 402 Inclusions in Natural, Synthetic, and Treated Emerald pg. 394 Nathan D. Renfro, John I. Koivula, Jonathan Muyal, Shane F. McClure, Kevin Schumacher, and James E. Shigley Provides a visual guide to the internal features of natural, synthetic, and treated emeralds. FIELD REPORTS 404 Update on Gemstone Mining in Northern Mozambique Wim Vertriest and Vincent Pardieu Recounts an expedition to Mozambique’s important deposits of ruby, spinel, and pg.
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