mineral

Quartz crystal cluster (likely druzy quartz)

Quartz, silicon dioxide (SiO₂)

AI-generated identification · may be incorrect

White to pale gray, translucent crystals with a vitreous-to-sparkly luster; hardness 7 Mohs, trigonal crystal structure, no cleavage, and uneven to conchoidal fracture. The specimen appears to be quartz crystals on a light-colored matrix; exact minerals cannot be confirmed from the photo.

Identified September 28, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich hydrothermal fluids in veins and cavities, or from groundwater in geodes. Its age depends on the host deposit and cannot be determined visually.

Uses & applications

Collected as a natural display specimen; quartz is also used in glassmaking, electronics, abrasives, and jewelry.

Geological facts

Druzy describes a surface covered with many small crystals rather than a distinct mineral species.

Field identification & locations

Look for hard, glassy crystals that scratch ordinary glass and resist scratching by a steel knife; quartz occurs worldwide in veins, geodes, and pegmatites. The photo does not show enough context to identify a specific locality or matrix.