Sharon Bohannon, March 17, 2017
Circumnavigate the boreal reaches of the globe to explore gems from polar regions.
Read MoreJaroslav Hyršl, August 9, 2018
Aesthetically pleasing inclusions are found in topaz from Pakistan’s Shigar Valley.
Read MoreJohn I. Koivula, August 3, 2016
The first triplite inclusion in a topaz host is examined.
Read MoreJonathan Muyal, Ziyin Sun, Nathan Renfro, and Aaron Palke, November 7, 2016
The first documented example of sphalerite as a crystal inclusion in colourless topaz.
Read MoreJohn I. Koivula, June 1, 1987
An examination of so-called "rutilated topaz."
Read MoreRobert C. Kammerling and John I. Koivula, September 1, 1989
Faceted colourless topaz containing acicular inclusions has been offered for sale as "rutilated" topaz.
Read MoreDona M. Dirlam
From the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
Read MoreEdward Gübelin, Giorgio Graziani, September 1, 1986
Pakistan has begun to produce fine gem-quality pink topaz.
Read MorePeter 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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