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XClear Selections
Diopside Needles as Inclusions in Demantoid Garnet from Russia: A Raman Microspectrometric Study

Michael S. Krzemnicki, December 1, 1999

Straight, acicular, colourless solid inclusions in demantoid garnet from the Ural Mountains of Russia were investigated by laser Raman microspectrometry.

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Sri Lanka: The Gem Island

Peter C. Zwaan, June 1, 1982

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

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Demantoid from Val Malenco, Italy
Demantoid from Val Malenco, Italy: Review and Update

Ilaria Adamo, Rosangela Bocchio, Valeria Diella, Alessandro Pavese, Pietro Vignola, Loredana Prosperi, and Valentina Palanza

New data are presented for demantoid from Val Malenco, Italy, as obtained by classical gemmological methods.

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The internal structures of natural pearls from the marine mollusk Pinctada maxima are the subject of the lead article in this issue. The scattered loose pearls on the cover are from Paspaley’s natural pearl collection, which includes one discovered in the 1970s at the Eighty Mile Beach fishing grounds
G&G Spring 2021 Edition
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