The PDF version of this issue is available at no charge. Visit www.gia.edu The Identification of Zachery-Treated TurquoiseEmmanuel Fritsch, Shane F. McClure, Mikhail Ostrooumov, Yves Andres, Thomas Moses, John I. Koivula, and Robert C. KammerlingSome Diagnostic Features of Russian Hydrothermal Synthetic Rubies and SapphiresKarl Schmetzer and Adolf PerettiThe Separation of Natural from Synthetic Colorless SapphireShane Elen and Emmanuel Fritsch 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: 439902
