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Amethyst
The essence of the color purple, amethyst is beautiful enough for crown jewels yet affordable enough for class rings.
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Research
A Simple Procedure to Separate Natural from Synthetic Amethyst on the Basis of Twinning
Where there are no inclusions or color zoning, the presence of Brazil twinning in the natural amethyst will usually make the distinction.
Amethystine Chalcedony
A Status Report on Gemstones from Afghanistan
An overview of the plentiful and various gem materials being discovered and produced in Afghanistan.
Artificially Induced Color in Amethyst-Citrine Quartz
A new and rather unusual gem material and possible treatments are discussed.
Amethyst History and Lore
Amethyst Quality Factors
Abstracts; Fall 1991
This article, from the Fall 1991 issue of Gems & Gemology, is a compilation of abstracts of important gemology-related articles published outside of Gems & Gemology.
Winter 1994 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 2001 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.
