Offering a Classic Slightly Smoky Quartz Gwindel, Tiefen Glacier, Urseren, Switzerland. Large at 4 inch by 3.5 inch. Surface detail is remarkable on all sides. The crystal is slightly smoky yet clear. There is a nice twist as seen in the video. Tough to get these at this size and quality. Note the white spot is internal not damage. Gwindels are quite rare and can be found only at a few locations, mostly in igneous rocks, gneisses and sometimes in shists, the best coming from the central Alps. In a gwindel the crystal appears to have grown "sideways", roughly parallel to its c-axis, and along an a-axis, to form a platy crystal like a faden quartz, however not flat, but slightly twisted and with bent crystal faces. The term "Gwindel" is derived from the German "gewunden", which means helicoidal, twisted. Hence the name twisted quartz. This specimen has a few minor bumps but overall in excellent condition as seen in the photos. USA only
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