mineral
Smoky Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, brown to black color, vitreous luster, trigonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 7 on the Mohs scale, brown to black color, vitreous luster, trigonal crystal system, and conchoidal fracture.
Formation & geological history
Forms when clear quartz is naturally exposed to radiation from surrounding radioactive rocks over millions of years.
Uses & applications
Used widely in gemstone jewelry, ornamental carvings, and metaphysical practices.
Geological facts
It is the national gemstone of Scotland and has been revered in ancient jewelry and Scottish weaponry for centuries.
Field identification & locations
Identified by its distinct translucent brownish-grey coloration and glassy luster; commonly found in pegmatites and granitic rocks worldwide.
