Smoky quartz is a grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or bl
Smoky quartz is a grey, translucent variety of quartz that ranges in clarity from almost complete transparency to an almost-opaque brownish-gray or black crystal. Like other quartz gems, it is a silicon dioxide crystal. The smoky colour results from free silicon formed from the silicon dioxide by natural irradiation. Photographed at the Natural History Museum, Vienna, Austria
Size: 4662px × 3774px
Location: Vienna, Austria
Photo credit: © Ilan Rosen / Alamy / Afripics
License: Licensed
Model Released: No
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