Fall 2022

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Feature articles from this issue: Methods and Challenges of Establishing the Geographic Origin of Diamonds by Evan M. Smith, Karen V. Smit, and Steven B. Shirey Sapphire Beneath th e Rich Black Soil of Muling, Northeastern China by Yimiao Liu and Ren Lu Gems on Canvas: Pigments Historically Sourced from Gem Materials by Britni LeCroy Color Mechanism and Spectroscopic Themal Variation of Pink Spinel Reportedly from Kuh-i-Lal, Tajikistan by Yicen Liu, Lijian Qi, Dietmar Schwarz, and Zhengyu Zhou GIA students and alumni save 10% on back issues! Enter coupon code GGALUM at checkout. Usually ships in 3-5 business days. SKU: 4302204 Show more