Winter 2022

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Feature articles from this issue: A Canary in the Ruby Mine: Low-Temperature Heat Treatment Experiments on Burmese Ruby by E. Billie Hughes and Wim Vertiest Fluorescence Characteri stics of Two Copper Diffused Plagioclase Feldspars: Labradorite and Andesine by Qingchao Zhou, Chengsi Wang, and Andy H. Shen Composition and Spectral Characteristics of Porcelain-Treated Turquoise by Liying Huang, Quanli Chen, Yan Li, Zuowei Yin, Fengshun Xu, Xinxin Gao, and Yang Du Never Stop Innovating: Gem Artist Chi Huynh by Tao Hsu, Artitaya Homkrajae, and Kevin Schumacher GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 4302201 Show more