mineral

Quartz Crystal Cluster

Quartz (Silicon Dioxide, SiO2)

Hardness: 7 on Mohs scale; Color: Colorless to white/cloudy; Luster: Vitreous (glassy); Crystal Structure: Hexagonal/Trigonal (terminating in six-sided points); Cleavage: Indistinct/Conchoidal fracture; Specific Gravity: 2.65.

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

Identified April 15, 2026More mineral →

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Physical properties

Formation & geological history

Formed from silica-rich hydrothermal solutions cooling in cavities or veins within the Earth's crust. This specimen likely formed in a vug (void) within sandstone or igneous host rock. Geological age can range from millions to hundreds of millions of years depending on the specific locality.

Uses & applications

Used in electronics for its piezoelectric properties, glassmaking, abrasives, and as a popular decorative or metaphysical specimen. Large clusters are highly valued by collectors and for interior design.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. It is a piezoelectric material, meaning it generates an electric charge in response to applied mechanical stress, which is why it is used in watches and clocks.

Field identification & locations

Identify in the field by its hexagonal crystal shape, lack of cleavage, and ability to scratch glass. Commonly found in mountainous regions like the Ouachita Mountains in Arkansas or the Alps. For collectors, look for clarity of points and lack of damage to the terminations.

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