mineral
Quartz Crystal
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on Mohs scale, Color: Milky white, clear, or with yellowish-brown iron staining, Luster: Vitreous to greasy, Crystal structure: Trigonal, Cleavage: None (conchoidal fracture), Specific gravity: 2.65
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Physical properties
Hardness: 7 on Mohs scale, Color: Milky white, clear, or with yellowish-brown iron staining, Luster: Vitreous to greasy, Crystal structure: Trigonal, Cleavage: None (conchoidal fracture), Specific gravity: 2.65
Formation & geological history
Formed in hydrothermal veins, pegmatites, and as a primary component of igneous, metamorphic, and sedimentary rocks over various geological eras.
Uses & applications
Used in electronics, glassware, abrasives, gemstone carvings, and crystal healing specimens.
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust and exhibits piezoelectric properties, meaning it can generate an electrical charge under mechanical stress.
Field identification & locations
Easily identified by its high hardness (scratches glass) and conchoidal fracture. Found worldwide in almost all geological environments.
More like this
Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
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
Septarian Pebble
Septarian nodule / Concretion
sedimentary