mineral
Tumbled Quartz
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, clear to white or slightly bluish color, vitreous luster, trigonal crystal system, no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, clear to white or slightly bluish color, vitreous luster, trigonal crystal system, no true cleavage, specific gravity of 2.65.
Formation & geological history
Forms in a wide variety of geological environments, frequently in hydrothermal veins and pegmatites, as well as igneous, metamorphic, and sedimentary rocks.
Uses & applications
Used in jewelry, tumbling, decorative objects, electronics, and oscillators due to its piezoelectric properties.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and exhibits piezoelectricity, meaning it can generate an electrical charge when mechanical stress is applied.
Field identification & locations
Easily identified by its hardness (scratches glass), lack of cleavage, and vitreous luster. Found globally in almost every rock type.
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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
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