mineral

Clear Quartz Point

Silicon Dioxide (SiO2)

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct/None; Specific Gravity: 2.65

Hardness: 7 on Mohs scale
Color: Colorless/Transparent
Luster: Vitreous (glassy)

Identified March 28, 2026More mineral →

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Physical properties

Hardness: 7 on Mohs scale; Color: Colorless/Transparent; Luster: Vitreous (glassy); Crystal Structure: Hexagonal (trigonal); Cleavage: Indistinct/None; Specific Gravity: 2.65

Formation & geological history

Formed through the cooling of silica-rich hydrothermal solutions in veins or during the cooling of igneous pegmatites. It is found in rocks of all geological ages.

Uses & applications

Used in electronics (oscillators), manufacturing of glass and ceramics, gemstone jewelry, and high-precision scientific instruments. It is also a staple for mineral collectors.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. Pure clear quartz is often called 'Rock Crystal', derived from the Greek word 'krustallos' meaning ice.

Field identification & locations

Identify by its ability to scratch glass (hardness) and its six-sided hexagonal prism shape terminating in a point. Common in mountainous regions worldwide like Arkansas, USA, and Minas Gerais, Brazil.