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Pyrope Garnet and Montana Sapphires Highlight Winter 2015 G&G

Russell Shor, February 1, 2016

G&G Brief presents an overview of the content of the Winter 2015 issue of Gems & Gemology.

Opals from Opal Butte, Oregon

Kevin Lane Smith, December 1, 1988

Recent mining at Opal Butte in northeastern Oregon has produced a wide variety of large flawless opals.

Abstract Header from the 2009 issue of Gems & Gemology

Abstracts; Winter 2009

Brendan M. Laurs, Thomas W. Overton

This article, from the Winter 2009 issue of Gems & Gemmology, is a compilation of abstracts of important gemmology-related articles published outside of Gems & Gemmology.

"Opalite": Plastic Imitation Opal with True Play-Of-Colour

John I. Koivula and Robert C. Kammerling, March 1, 1989

A plastic imitation opal that shows true play-of-colour was advertised as "new" and offered for sale under the trade name "Opalite" at the Gem and Lapidary Dealers Association (GLDA) Tucson show in February 1988.

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