mineral

Clear Quartz

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on Mohs scale; Color: Colorless to white; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless to white
Luster: Vitreous (glassy)

Identified May 12, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless to white; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: None (conchoidal fracture); Specific Gravity: 2.65

Formation & geological history

Forms through the cooling of silica-rich magma or from hydrothermal veins. It can be found in igneous, metamorphic, and sedimentary environments globally, appearing in various geological ages.

Uses & applications

Extensively used in electronics (oscillators), optics, glassmaking, construction (as sandpaper or building materials), and as a popular gemstone for jewelry and spiritual practices.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Pure quartz is structurally clear, though impurities can turn it into amethyst, citrine, or smoky quartz.

Field identification & locations

Identified in the field by its hardness (scratches glass), lack of cleavage, and conchoidal fracture. Found commonly in pegmatites, riverbeds, and mountainous regions like the Alps or Arkansas, USA.