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Multi-colored gems are superimposed on an image of glacier peaks.

Article

Gems and Minerals from the Sub-Arctic

Sharon Bohannon, March 17, 2017

Circumnavigate the boreal reaches of the globe to explore gems from polar regions.

Topaz from Pakistan with microlite inclusions.

Microlite Crystals in Topaz from Pakistan

Jaroslav Hyršl, August 9, 2018

Aesthetically pleasing inclusions are found in topaz from Pakistan’s Shigar Valley.

Quarterly Crystal: Triplite in Topaz

John I. Koivula, August 3, 2016

The first triplite inclusion in a topaz host is examined.

Sphalerite in Topaz

Jonathan Muyal, Ziyin Sun, Nathan Renfro, and Aaron Palke, November 7, 2016

The first documented example of sphalerite as a crystal inclusion in colourless topaz.

The Rutilated Topaz Misnomer

John I. Koivula, June 1, 1987

An examination of so-called "rutilated topaz."

Thermal Alteration of Inclusions in "Rutilated" Topaz

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

Faceted colourless topaz containing acicular inclusions has been offered for sale as "rutilated" topaz.

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.

Pink Topaz from Pakistan

Edward Gübelin, Giorgio Graziani, September 1, 1986

Pakistan has begun to produce fine gem-quality pink topaz.

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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