Large Smokey Quartz with stand
Three point standing side by side.
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DescriptionSmoky 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. Wikipedia
Color: Black, Brown
Crystal system: Hexagonal crystal system
Chemical formula: SiO₂₊
Hardness (Mohs hardness scale): 7
Mineral class: Quartz
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