mineral

Quartz crystal (likely clear quartz)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Typically colorless to translucent with a vitreous luster and hexagonal crystal structure; Mohs hardness 7, no cleavage, conchoidal fracture, and specific gravity about 2.65. The small specimen appears crystalline and pale gray/clear, though the image is not detailed enough for certainty.

Identified September 20, 2026More mineral →

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Physical properties

Formation & geological history

Forms in hydrothermal veins, cavities in igneous rocks, and sedimentary or metamorphic environments through silica-rich fluids; quartz occurs from many geological ages. Its exact locality and age cannot be determined visually.

Uses & applications

Used in glass, electronics, abrasives, ceramics, and construction aggregate; transparent crystals are collected or cut as gemstones. Small common specimens generally have modest value.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge under pressure. Crystal faces, rather than surface sparkle alone, help distinguish it from man-made glass.

Field identification & locations

Look for hardness sufficient to scratch ordinary glass, lack of cleavage, conchoidal fracture, and six-sided crystal faces; common sources include Brazil, Madagascar, Arkansas, and the Alps. The image may also show a polished or coated quartz fragment.