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One of the very few pieces from this uncommon find in Cunningham Gulch
The famous Camp Bird Mine
incredibly rare
Several great
Specimen# CO712B92
Bertrandite gray One of the very fewBetrandite is a fairly rare beryllium silicate, and crystals are typically small worldwide, usually less than 1 cm. These new specimens from Golconda feature crystals measuring OVER 3 cm(!) which is world class for the species. Not only are these monstrous crystals, but the quality is as good as it gets showing a glossy vitreous luster and a gorgeous porcelain white hue. This particular piece features a top quality, DOUBLY TERMINATED, highly lustrous,
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