Spring 2020

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Feature articles from this issue: A Quantitative Description of the Causes of Color in Corundum by Emily V. Dubinsky, Jennifer Stone-Sundberg, and John L. Emmett The Evolution of C hinese Jade Carving Craftsmanship by Mingying Wang and Guanghai Shi Color Characteristics of Blue to Yellow Beryl from Multiple Origins by Yang Hu and Ren Lu History of the Chivor Emerald Mine, Part I (1880–1925): From Rediscovery to Early Production by Karl Schmetzer, Gérard Martayan, and Jose Guillermo Ortiz Rhodonite-Pyroxmangite from Tanatz Alp, Switzerland by Franca Caucia, Luigi Marinoni, Maria Pia Riccardi, Omar Bartoli, and Maurizio Scacchetti GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 4302002 Show more