mineral

Clear Quartz

Crystalline Silicon Dioxide (SiO2)

Hardness: 7 (Mohs scale), Color: Colorless/Transparent, Luster: Vitreous, Crystal Structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65

Identified March 23, 2026More mineral →

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Physical properties

Hardness: 7 (Mohs scale), Color: Colorless/Transparent, Luster: Vitreous, Crystal Structure: Trigonal/Hexagonal, Cleavage: None/Conchoidal fracture, Specific Gravity: 2.65

Formation & geological history

Formed during the cooling of magma or in hydrothermal veins under varying geological ages; grows as silica-rich water fills rock crevices and deposits minerals as it cools or evaporates.

Uses & applications

Used extensively in consumer electronics (piezoelectric properties), glassmaking, construction, jewelry, and as a popular semi-precious gemstone for metaphysical and decorative use.

Geological facts

Clear Quartz is known as the 'Master Healer' in metaphysical circles. It is the most abundant mineral found at the Earth's surface and was used by ancient Greeks who believed it was ice that had frozen so hard it would never melt.

Field identification & locations

Identified in the field by its distinct hexagonal crystal habit and its ability to scratch glass (hardness 7). It is found globally, with major deposits in Brazil, Madagascar, and Arkansas, USA. Focus on clarity and absence of inclusions for high-grade specimens.