mineral
Clear Quartz
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Colorless/Transparent
- Luster
- Vitreous (glassy)
Identified More mineral →
Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal; Cleavage: None/Conchoidal fracture; Specific Gravity: 2.65
Formation & geological history
Formed through the cooling of silica-rich magma or from hydrothermal veins. It is found in igneous, metamorphic, and sedimentary environments across all geological ages.
Uses & applications
Used widely in electronics for its piezoelectric properties, glassmaking, watches, abrasive manufacturing, jewelry, and as a popular collector specimen.
Geological facts
Quartz is one of the most abundant minerals in the Earth's crust. It is piezoelectric, meaning it can generate an electric charge when mechanical pressure is applied.
Field identification & locations
Identify in the field by its hardness (scratches glass), lack of cleavage, and hexagonal crystal habit. Found globally, prominent locations include Brazil, USA (Arkansas), and the Alps.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Nephrite Jade
Nephrite
Mineral/Rock
Banded Gneiss (River Rock/Pebble)
Gneiss (specifically a banded variety often found as a river rock)
Metamorphic Rock
![Green Apatite on Albite (Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]) — mineral](https://media.rockidentification.com/2391a63f-fb20-47d5-af9a-2035851eb32e-thumbnail.jpg)
Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
mineral
Epidote
Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)
mineral