mineral
Clear Quartz Crystal
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 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
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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).