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  • Summer 2004

Summer 2004

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The PDF version of this issue is available at no charge. Visit www.gia.edu
Gem Treatment Disclosure and U.S. Law
Thomas W. Overton

Lab-Grown Colored Diamonds from Chatham Created Gems
James E. Shigley, Shane F. McClure, Christopher M. Breeding, Andy Hsi-tien Shen, and Samuel M. Muhlmeister

The 3543 cm-1 Infrared Absorption Band in Natural and Synthetic Amethyst and Its Value in Identification
Vladimir S. Balitsky, Denis V. Balitsky, Galina V. Bondarenko, and Olga V. Balitskaya

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: 04su