Winter 1992

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The PDF version of this issue is available at no charge. Visit www.gia.edu Methods for Determining the Gold Content of Jewelry MetalsMeredith E. MercerDiamond Sources and Productio n: Past, Present, and FutureAlfred A. Levinson, John J. Gurney and Melissa B. KirkleySapphires from Changle in Shandong Province, ChinaJingfeng Guo, Fuquan Wang, and Gerry Yakoumelos 1992 Annual Index 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: 439201 Show more