Winter 2025

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Feature articles from this issue: The Primary Sapphire Occurrence at French Bar Sill Along the Missouri River, Near Helena, Montana by Robert E. Kane, Kory L. Pettman, Aaron C. Pal ke, Rachelle B. Turnier, Richard B. Berg, Nathan D. Renfro, and Christopher P. Smith Characterization of Emeralds from Zhen’an County in Shaanxi, China by Yi Guo, Xiao-Yan Yu, and Yu-Yu Zheng An Evaluation of Turquoise from the Mona Lisa Mine in Arkansas by Alexander A. Goodsuhm Usually ships in 3-5 business days. SKU: 930-2504 Show more