mineral

Quartz (Milky Quartz / Greenish Quartz)

SiO2 (Silicon Dioxide)

Hardness: 7 on Mohs scale. Color: Translucent white to milky green. Luster: Vitreous (glassy) to greasy. Crystal structure: Trigonal/Hexagonal. Cleavage: Indistinct/Conchoidal fracture. Specific gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Translucent white to milky green
Luster: Vitreous (glassy) to greasy

Identified March 23, 2026More mineral →

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Physical properties

Formation & geological history

Formed through hydrothermal processes, cooling of silica-rich magma, or precipitation from fluids in veins. Found in various geological ages ranging from Precambrian to Cenozoic.

Uses & applications

Industrial uses in glass manufacturing, electronics (piezoelectric properties), abrasives, and as a popular semi-precious stone for jewelry or metaphysical collecting.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is highly resistant to chemical and physical weathering, which is why it often remains as grains of sand on beaches.

Field identification & locations

Identify in the field by its ability to scratch glass and its lack of cleavage (it breaks like glass). Common worldwide in granitic rocks and hydrothermal veins. Collectors should look for crystalline points or unique inclusions.

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