The quarterly journal of the gemological institute of america
EDITORIAL
Yellow Topaz from Germany, Emerald Mining in Austria’s Habachtal Region, a Return to Tucson, and More…
Duncan Pay, Editor-in-Chief
An overview of the Spring 2022 Gems & Gemology content.
Articles (3)
History of Emerald Mining in the Habachtal Deposit of Austria, Part II
The finale of a two-part series on the mining history of Austrian emerald deposits in the Habachtal region.
Gem Topaz from the Schneckenstein Crag, Saxony, Germany: Mineralogical Characterization and Luminescence
Characterizes yellow topaz from this historical source, with particular emphasis on its photo luminescence behavior.
Regular Features
GEM NEWS INTERNATIONAL
Global coverage of gem sources, notable new gem materials, and recent industry developments.
THE DR. EDWARD J. GÜBELIN
Most Valuable Article Awards
Measurement and Characterization of the Effects of Blue Fluorescence on Diamond Appearance
Yun Luo, David Nelson, Troy Ardon, and Christopher M. Breeding
Internal Structures of Known Pinctada maxima Pearls: Natural Pearls from Wild Marine Mollusks
Artitaya Homkrajae, Areeya Manustrong, Nanthaporn Nilpetploy, Nicholas Sturman, Kwanreun Lawanwong, and Promlikit Kessrapong
Blue Sapphires from Mogok, Myanmar: A Gemological Review
Wasura Soonthorntantikul, Ungkhana Atikarnsakul, and Wim Vertriest
