mineral

Clear quartz (rock crystal), possibly a small rough fragment

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Colorless to cloudy translucent, with a glassy luster and hexagonal crystal structure; hardness 7 on the Mohs scale and no cleavage, breaking with irregular to conchoidal fracture. The photo does not show enough detail to confirm the identification or assess quality.

Identified October 15, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich fluids and melts in igneous, metamorphic, and hydrothermal settings. It forms across many geological ages and is common in veins and cavities.

Uses & applications

Used in jewelry and ornaments, and industrially in glass, abrasives, and electronics; this fragment appears suitable mainly for collecting or craft use.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge under pressure.

Field identification & locations

Check for glassy luster, hardness sufficient to scratch ordinary glass, and lack of cleavage; these tests are not conclusive from the image alone. Quartz occurs worldwide in veins, pegmatites, and sedimentary deposits.