mineral

Clear quartz (likely quartz crystal fragment)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

Colorless and transparent to translucent, with a vitreous luster and commonly hexagonal crystal structure; Mohs hardness 7, conchoidal fracture, no cleavage, and specific gravity about 2.65. The thin, irregular piece appears highly fractured or possibly partially processed.

Identified August 10, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich igneous melts, hydrothermal fluids, and metamorphic veins; specimens may range from Precambrian to recent geological settings. The image alone cannot establish its exact origin or age.

Uses & applications

Used in glassmaking, electronics, optical instruments, abrasives, countertops, and jewelry. Clear attractive crystals are collected and sometimes cut as gemstones.

Geological facts

Quartz is one of Earth’s most abundant minerals and is piezoelectric, producing an electrical charge when mechanically stressed.

Field identification & locations

Identify by its glassy appearance, lack of cleavage, conchoidal fracture, and ability to scratch ordinary glass; avoid confusing it with clear calcite, which is softer and cleaves readily. Common localities include Brazil, Madagascar, Arkansas, Switzerland, and many hydrothermal veins worldwide.