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Freeform topaz under daylight-equivalent light.

Polished Freeform Topaz Imitating Diamond Rough

Akhil Sehgal and Riccardo Befi, November 23, 2015

Material submitted as a rough diamond is revealed through gemmological testing and analysis to be a near-colourless topaz.

The Rutilated Topaz Misnomer

John I. Koivula, June 1, 1987

An examination of so-called "rutilated topaz."

Gem-Bearing Pegmatites: A Review

James E. Shigley and Anthony R. Kamp, June 1, 1984

A survey of the current gemmological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline and topaz.

Abstracts; Summer 2010

Brendan M. Laurs, Thomas W. Overton

This article, from the Summer 2010 issue of Gems & Gemology, is a compilation of abstracts of important gemmology-related articles published outside Gems & Gemology.

Abstracts; Summer 1991

Dona M. Dirlam

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

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