Opalized Fluorite! This stone is rare and unbelievable! Composed of Opalized Fluorite (purple and white), it is also a mix of many other minerals, such as Bertrandite, Quartz, Chalcedony, Dolomite, Rhodonite, Manganese Oxides, etc. Note the hollows and vugs throughout--beautiful! A bit of history is in order here - it's fascinating!
The Brush Wellman Mine in the Topaz-Spor Mountains of western Utah is the only developed Beryllium site in North America where Opalized Fluorite has been found. Aka Opal Fluorite, Agatized Fluorite, Bertrandite and Beryllium ore, "Tiffany Stone" was named by a prospector-type who acquired a large lot from the original miners. It's actually a by-product of Beryllium extraction, an ore that was mined for use in the aerospace industry (missile nosecones) in the early 1960s. Few Opal Fluorites survived the Beryllium crushing process, so specimens were rather rare even then. Miners snapped up what was available, and this particular specimen is part of that "old stock" inventory.
Since the Brush Wellman mine has been closed to the public for years, no new stock is available there (small amounts of "new stock" are mostly with private owners and rarely made available to the public). Translated, that means that when the "old stock" is gone, it's gone! What more can I say? This is a "must have" piece for any serious collector, and a piece of history for the rest of us! Utah.
Dimensions: 6" x 4 3/8" x 2 3/4" thick
Weight: 1.4 lbs.