Spring 1999
- $15.00
The PDF version of this issue is available at no charge. Visit www.gia.edu
The Identification of Zachery-Treated Turquoise
Emmanuel Fritsch, Shane F. McClure, Mikhail Ostrooumov, Yves Andres, Thomas Moses, John I. Koivula, and Robert C. Kammerling
Some Diagnostic Features of Russian Hydrothermal Synthetic Rubies and Sapphires
Karl Schmetzer and Adolf Peretti
The Separation of Natural from Synthetic Colorless Sapphire
Shane Elen and Emmanuel Fritsch
Emmanuel Fritsch, Shane F. McClure, Mikhail Ostrooumov, Yves Andres, Thomas Moses, John I. Koivula, and Robert C. Kammerling
Some Diagnostic Features of Russian Hydrothermal Synthetic Rubies and Sapphires
Karl Schmetzer and Adolf Peretti
The Separation of Natural from Synthetic Colorless Sapphire
Shane 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).
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SKU: 439902
