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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
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 Care and Cleaning Guide
Learn about amethyst's durability and how to care for your amethyst jewelry.
Amethyst History and Lore
Amethyst Quality Factors
Amethyst Description
Amethyst is the purple variety of the quartz mineral species and the gem most commonly associated with the color purple.
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.
