Most authorities agree that the name topaz comes from Topazios, the old Greek name for a small island in the Red Sea, now called Zabargad. (The island never produced topaz, but it was once a source of peridot, which was confused with topaz before the development of modern mineralogy.)
Read MoreExamination of samples of faceted "Ocean green" topaz reveals that this material has been irradiated in a nuclear reactor.
Read MoreFaceted colourless topaz containing acicular inclusions has been offered for sale as "rutilated" topaz.
Read MoreFrom the Summer 1991 issue of Gems & Gemmology, a summary of important gemmology-related articles published in other journals.
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Once upon a time, gem cutting was a strict craft bound by centuries of tradition. Then Bernd Munsteiner (b. 1943) invented the fantasy cut.
Read MoreThe Capao mine is one of the oldest and most productive fully mechanised Imperial topaz mines in the historic Ouro Preto area of Minas Gerais, Brazil.
Read MoreA survey of the current gemmological knowledge of pegmatites, including the gem varieties aquamarine, tourmaline and topaz.
Read MoreThis article presents, for the first time, both gemmological and geologic information on topaz, aquamarine and other beryls from miarolitic pegmatites at Namibia’s historic Klein Spitzkoppe mineral locality.
Read MoreThis article examines the history of the Ouro Preto district as well as the geology of the area and occurrence of the topaz.
Read MoreAn overview of the many types of gem-quality material, and its inclusions, currently found in Sri Lanka.
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