mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous; Crystal Structure: Hexagonal (Trigonal); Cleavage: None/Conchoidal Fracture; Specific Gravity: 2.65
- Hardness
- 7 on Mohs scale
- Color
- Colorless/Transparent
- Luster
- Vitreous
Identified More mineral →
Explore Clear Quartz Crystal in the encyclopedia →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; Crystal Structure: Hexagonal (Trigonal); Cleavage: None/Conchoidal Fracture; Specific Gravity: 2.65
Formation & geological history
Formed from cooling silica-rich magma or through hydrothermal activity in veins. It can be found in almost all geological environments and across all geological ages.
Uses & applications
Used in jewelry, precision technology (oscillators), glassmaking, abrasives, and highly valued in the metaphysical and specimen collecting communities.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust. Single crystals can grow to be several meters long and weigh hundreds of kilograms.
Field identification & locations
Identified in the field by its hardness (scratches glass), hexagonal prism shape with pyramidal terminations, and lack of cleavage. Common in Brazil, Madagascar, and the USA (Arkansas).
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Granite
Granite (Phaneritic intrusive igneous rock)
igneous