Fall 2011
Volume 47, Issue 3

Purchase this issue or the feature articles.

New Beginnings
Jan Iverson

Ruby and Sapphire from the Tan Huong–Truc Lau Area, Yen Bai Province, Northern Vietnam
Nguyen Ngoc Khoi, Chakkaphan Sutthirat, Duong Anh Tuan, Nguyen Van Nam, Nguyen Thi Minh Thuyet, and Nguy Tuyet Nhung

Infrared Spectroscopy of Natural vs. Synthetic Amethyst: An Update
Stefanos Karampelas, Emmanuel Fritsch, Triantafillia Zorba, and Konstantinos M. Paraskevopoulos

Exploring the Origin and Nature of Luminescent Regions in CVD Synthetic Diamond
Bert Willems, Alexandre Tallaire, and Julien Barjon

Identification of Extraterrestrial Peridot by Trace Elements
Andy H. Shen, John I. Koivula, and James E. Shigley

A History of Diamonds through Philately: The Frank Friedman Collection
Stuart D. Overlin

REGULAR FEATURES
2011 Challenge Winners
Lab Notes (Featuring: Gem-Quality CVD Synthetic Diamonds from Gemesis)
Gem News International (Featuring: Color-Change Garnet from Nandagala, Tanzania)
Book Reviews
Gemological Abstracts

Issues of Gems & Gemology may be purchased individually, or save by buying one-, three-, or five-year sets. To place an order, visit the GIA Store or contact the Circulation Coordinator: 800-421-7250, ext. 7142. Outside the U.S., email or call 760-603-4000, ext. 7142.