mineral

Small translucent quartz pebble

Quartz (silicon dioxide, SiO₂), possibly milky or chalcedonic quartz

AI-generated identification · may be incorrect

Likely hardness ~7 Mohs, white to cream, translucent, and glassy to waxy luster; quartz is trigonal and lacks cleavage, showing conchoidal fracture. The image is too blurred for confident identification of crystal form or specific gravity.

Identified September 15, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich igneous, hydrothermal, and sedimentary systems; this rounded piece was likely naturally weathered or tumbled from quartz-rich rock. Its precise geological age and locality cannot be determined visually.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and construction aggregate; attractive pieces are sold as inexpensive specimens or lapidary material.

Geological facts

Quartz is one of Earth’s most abundant minerals and is chemically resistant, allowing it to survive as durable stream and beach pebbles.

Field identification & locations

Identify by its translucency, very high hardness, lack of cleavage, and conchoidal fracture; it should scratch ordinary glass. Common worldwide, especially in veins, granites, sandstones, and placer gravels.