Spring 2016 - Volume 52, Issue 1
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Two variscite cabochons from central Tajikistan
Variscite from Central Tajikistan: Preliminary Results

A look at the gemological properties and chemical composition of this light blue to light green to green gem material, which is suitable for cabochon cutting.

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Opal slices before and after water immersion
Hydrophane Opal Treatment

An opal rough is immersed in water and treated with oil and Opticon to observe effects on transparency and play-of-color.

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New tsavorite production from Scorpion mine
Update on the Scorpion Tsavorite Mine

A look at the resumed operations and new production of Kenya’s Scorpion tsavorite mine.

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Yunnan emerald at Tucson
Rare Emerald from China and Pink Sapphire from Sri Lanka

An emerald from a largely unexplored Chinese deposit is seen at Tucson, along with a pink sapphire recut after removal from a necklace.

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The Guy Ladrière Collection of Gems and Rings Book Cover
Book Review: The Guy Ladrière Collection of Gems and Rings

Review of The Guy Ladrière Collection of Gems and Rings, by Diana Scarisbrick, Claudia Wagner, and John Boardman.

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Wartski: The First Hundred and Fifty Years Book Cover
Book Review: Wartski: The First Hundred and Fifty Years

Review of Wartski: The First Hundred and Fifty Years, by Geoffrey Munn.

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Cartier Royal High Jewelry and Precious Objects Book Cover
Book Review: Cartier Royal High Jewelry and Precious Objects

Review of Cartier Royal High Jewelry and Precious Objects, by François Chaille.

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The Classic Goldsmith Book Cover
Book Review: The Classic Goldsmith

Review of The Classic Goldsmith, by Mark Maxwell.

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Collector’s Guide to the Amphibole Group Book Cover
Book Review: Collector’s Guide to the Amphibole Group

Review of Collector’s Guide to the Amphibole Group, by Robert J. Lauf.

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Svanbergite inclusions in dolomite
Dolomite with Unusual Inclusions

Inclusions in gem-quality dolomite are found to be the rare mineral svanbergite.

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