mineral
Quartz (Smoky Quartz with inclusions)
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, trigonal crystal system, specific gravity of 2.65, color ranges from translucent grey to brown with dark mineral inclusions.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous luster, conchoidal fracture, trigonal crystal system, specific gravity of 2.65, color ranges from translucent grey to brown with dark mineral inclusions.
Formation & geological history
Forms in hydrothermal veins, pegmatites, and igneous rocks through the crystallization of silica-rich solutions over geological timescales.
Uses & applications
Used in gemstone jewelry, ornamental carvings, lapidary arts, and scientific equipment.
Geological facts
Smoky quartz gets its natural coloration from free silicon formed from the surrounding silicon dioxide by natural irradiation.
Field identification & locations
Identified by its hard crystal structure, conchoidal fracture, and lack of cleavage. Common worldwide.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous