mineral

Quartz Crystal Point

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Clear to milky white; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct/Conchoidal fracture; Specific Gravity: 2.65

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

Identified May 29, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Clear to milky white; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct/Conchoidal fracture; Specific Gravity: 2.65

Formation & geological history

Formed from silica-rich hydrothermal solutions or the cooling of magma in igneous rocks like granite. Can form in veins over millions of years.

Uses & applications

Commonly used in jewelry, as metaphysical healing crystals, in glassmaking, and in electronics (due to its piezoelectric properties).

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Pure quartz is traditionally called rock crystal or clear quartz.

Field identification & locations

Identify by its hardness (it can scratch glass), its six-sided prismatic shape, and its lack of cleavage. Commonly found in mountainous regions worldwide.