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Fall 2000, Volume 36, Issue 3
EDITORIAL
New Diamond Treatments: What Do They Mean for the Gemological Laboratory? p.189
William E. Boyajian
FEATURE ARTICLES
GE POL Diamonds: Before and After p.192-p.215
Christopher P. Smith, George Bosshart, Johann Ponahlo, Vera M.F. Hammer, Helmut Klapper, and Karl Schmetzer
Sapphires from Antsiranana Province, Northern Madagascar p.216-p.233
Dietmar Schwarz, Jan Kanis, and Karl Schmetzer
Pre-Columbian Gems and Ornamental Materials from Antigua, West Indies p.233-p.245
A. Reg Murphy, David J. Hozjan, Christy N. de Mille, and Alfred A. Levinson
NOTES AND NEW TECHNIQUES
Gem Quality Haüyne from the Eifel District, Germany p.246-p.253
Lore Kiefert and H.A. Hänni
REGULAR FEATURES
Gem Trade Lab Notes p.254-p.259
Lab Notes highlight: Diamond: Blue and Pink, HPHT Annealed p.255
Matt Hall and Thomas Moses
Gem News p.260-p.274
Gem News highlight: Curved quadruplet boulder opal imitations p.272-p.273
Emmanuel Fritsch
2000 Challenge Winners p.275
Book Reviews p.277-p.279
Gemological Abstracts p.280-p.290
About the Cover
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