gemstone
Smoky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, brown to black color, vitreous luster, hexagonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, brown to black color, vitreous luster, hexagonal crystal system, and conchoidal fracture.
Formation & geological history
Forms in igneous and metamorphic rocks through natural irradiation of quartz containing trace aluminum impurities.
Uses & applications
Widely used in jewelry, ornamental carvings, and metaphysical applications.
Geological facts
Its distinct smoky color is caused by gamma radiation acting on aluminum impurities within the crystal lattice over millions of years.
Field identification & locations
Identified by its characteristic brown to near-black coloration, vitreous luster, and high scratch resistance; commonly found globally in pegmatites.
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