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Trigonal growth features on a blue cap tourmaline termination
Tourmaline Termination

The blue cap termination from a tourmaline crystal was preserved and polished, yielding a unique designer gem.

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Bicolor tourmaline double cabochon displaying pink and white chatoyant bands on opposite sides.
Bicolour Double-Eye Tourmaline

A tourmaline displaying different colours of chatoyancy on opposite sides of a double cabochon is examined.

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Sri Lanka: The Gem Island

An overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.

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Abstracts; Summer 1991

From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.

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