mineral
Smoky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, brown to black color, vitreous luster, hexagonal crystal system, conchoidal fracture.
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Physical properties
Hardness of 7 on Mohs scale, brown to black color, vitreous luster, hexagonal crystal system, conchoidal fracture.
Formation & geological history
Formed in igneous and metamorphic rocks through natural irradiation of quartz containing trace aluminum impurities.
Uses & applications
Widely used in jewelry making, ornamental carvings, and as a collectible gemstone.
Geological facts
The brown color results from gamma radiation acting on aluminum impurities substituting for silicon in the crystal lattice.
Field identification & locations
Identified by its brownish coloration, high hardness, and conchoidal fracture; commonly found in pegmatites globally.
