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Topaz
Honey yellow. Fiery orange. Cyclamen pink. Icy blue. In warm or cool tones, topaz is a lustrous and brilliant gem.
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Summer 1994 Gem News International
Topaz, Aquamarine, and Other Beryls from Klein Spitzkoppe, Namibia
This article presents, for the first time, both gemological and geologic information on topaz, aquamarine, and other beryls from miarolitic pegmatites at Namibia’s historic Klein Spitzkoppe mineral locality.
Summer 1998 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Summer 1985 G&G; Lab Notes
Summer 1987 G&G; Lab Notes
This section, from the Summer 1987 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Winter 1995 G&G; Lab Notes
This section, from the Winter 1995 issue of Gems & Gemology, is a compilation of interesting finds from GIA’s laboratories.
Irradiated Topaz and Radioactivity
Spring 1992 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Spring 1983 Gem News International
A compilation of gem news from around the world, covering topics such as localities, unusual gem materials, market news, new products, discoveries, jewelry manufacturing techniques, and industry trends.
Winter 2004 Gem News International
The Radioactive Decay Pattern of Blue Topaz Treated by Neutron Irradiation
A systematic study of 15 neutron-irradiated blue topaz samples was conducted using high-purity germanium (HPGe) digital gamma-ray spectroscopy.
