Winter 1996
- $15.00
The PDF version of this issue is available at no charge. Visit www.gia.edu
An Update on Imperial Topaz from the Cap„o Mine, Minas Gerais, Brazil
Daniel A. Sauer, Alice S. Keller, and Shane F. McClure
Trapiche Rubies
Karl Schmetzer, Henry A. H‰nni, Heinz-J¸rgen Bernhardt, and Dietmar Schwarz
Some Gemological Challenges in Identifying Black Opaque Gem Materials
Mary L. Johnson, Shane F. McClure, and Dino G. DeGhionno
Enstatite, Cordierite, Kornerupine, and Scapolite with Unusual Properties from Embilipitiya, Sri Lanka
Pieter C. Zwaan
Some Tanzanite Imitations
Lore Kiefert and Susanne Th. Schmidt
Daniel A. Sauer, Alice S. Keller, and Shane F. McClure
Trapiche Rubies
Karl Schmetzer, Henry A. H‰nni, Heinz-J¸rgen Bernhardt, and Dietmar Schwarz
Some Gemological Challenges in Identifying Black Opaque Gem Materials
Mary L. Johnson, Shane F. McClure, and Dino G. DeGhionno
Enstatite, Cordierite, Kornerupine, and Scapolite with Unusual Properties from Embilipitiya, Sri Lanka
Pieter C. Zwaan
Some Tanzanite Imitations
Lore Kiefert and Susanne Th. Schmidt
1996 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).
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SKU: 439601
