mineral
Smoky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, brown to nearly black color, vitreous luster, hexagonal crystal system, and conchoidal fracture with specific gravity around 2.65.
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Physical properties
Hardness of 7 on Mohs scale, brown to nearly black color, vitreous luster, hexagonal crystal system, and conchoidal fracture with specific gravity around 2.65.
Formation & geological history
Formed in hydrothermal veins and pegmatites through natural irradiation of crystalline quartz over millions of years.
Uses & applications
Used widely in gemstone jewelry, ornamental carvings, and metaphysical collections.
Geological facts
The dark coloration results from free silicon formed when natural radiation alters the quartz crystal lattice.
Field identification & locations
Identified by its brownish translucent to opaque coloration and typical quartz conchoidal fracture. Found worldwide, notably in Brazil, the US, and the Swiss Alps.
