Spring 2012

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The PDF version of this issue is available at no charge. Visit www.gia.edu Emeralds from the Fazenda Bonfim Region, Rio Grande do Norte, Brazil J. C. (Hanco) Zwaan, Dorrit E. Jacob , Tobias Hager, Mário T. O. Cavalcanti Neto, and Jan Kanis Brazil's Emerald Industry Andy Lucas Characterization of Colorless Coated Cubic Zirconia (Diamantine) James E. Shigley, Al Gilbertson, and Sally Eaton-Magaoa Precision Measurement of Inter-Facet Angles on Faceted Gems Using a Goniometer Andy H. Shen, William A. Bassett, Elise A. Skalwold, Nicole J. Fan, and Yong Tao The Vallerano Diamond from Ancient Rome: A Scientific Study Alessandro Bedini, Sylvana Ehrman, Stella Nunziante Cesaro, Maria Pasini, Ida Anna Rapinesi, and Diego Sali Radioactive Morganite Hiroshi Kitawaki, Yoichi Horikawa, Katsumi Shozugawa, and Norio Nogawa Every issue also includes the most up-to-date reports from the GIA Laboratory (Lab Notes) and gemologists around the world (Gem News International). GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 4301202 Show more