mineral

Quartz pebble

Quartz (SiO₂), likely iron-stained or included massive quartz

AI-generated identification · may be incorrect

Opaque to translucent, cream-peach with gray-purple inclusions; vitreous to dull luster, Mohs hardness 7, trigonal crystal structure, no cleavage and conchoidal fracture. The image does not show enough detail to confirm the identification or specific gravity.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Quartz commonly crystallizes from silica-rich fluids in veins and pegmatites, or forms as grains in sedimentary rocks; its age depends on the host deposit.

Uses & applications

Quartz is used in glassmaking, electronics, abrasives, and ornamentation; this small irregular piece is mainly suitable for a collection or craft use.

Geological facts

Quartz is one of Earth’s most abundant minerals and occurs in many colors due to trace impurities and inclusions.

Field identification & locations

Check for glass-like hardness and lack of cleavage; common worldwide in veins, igneous rocks, and sediment. The irregular, pale specimen may also be another mineral, so identification would benefit from hardness and streak tests.