Gems and Minerals from the Subarctic
Circumnavigate the boreal reaches of the globe to explore gems from polar regions.
Sphalerite in Topaz
The first documented example of sphalerite as a crystal inclusion in colorless topaz.
Quarterly Crystal: Triplite in Topaz
The first triplite inclusion in a topaz host is examined.
Molybdenite in Topaz
An unusual host-inclusion association is revealed when cluster of crystals in a colorless topaz is discovered to be molybdenite.
Pink Topaz from Pakistan
Pakistan has begun to produce fine gem-quality pink topaz.
Thermal Alteration of Inclusions in "Rutilated" Topaz
Faceted colorless topaz containing acicular inclusions has been offered for sale as "rutilated" topaz.
The Rutilated Topaz Misnomer
An examination of so-called "rutilated topaz."
Sri Lanka: The Gem Island
An overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.
Abstracts; Summer 1991
From the Summer 1991 issue of Gems & Gemology, a summary of important gemology-related articles published in other journals.