mineral

Quartz Pebble

Silicon Dioxide (SiO2)

AI-generated identification · may be incorrect

Hardness: 7 on Mohs scale. Color: Translucent white to milky tan. Luster: Vitreous to waxy (when water-worn). Crystal Structure: Hexagonal (trigonal). Cleavage: None (conchoidal fracture). Specific Gravity: 2.65.

Hardness: 7 on Mohs scale
Color: Translucent white to milky tan
Luster: Vitreous to waxy (when water-worn)

Identified June 2, 2026More mineral →

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Physical properties

Formation & geological history

Formed from silica-rich hydrothermal fluids or within igneous and metamorphic rocks. This specific specimen has been weather-worn and rounded by water transport in a river or coastal environment, likely over thousands of years.

Uses & applications

Used in glassmaking, abrasives, and as decorative landscaping gravel. High-purity quartz is essential in electronics and silicon chip manufacturing.

Geological facts

Quartz is the second most abundant mineral in Earth's continental crust. This pebble shape is the result of 'abrasion' which happens as the rock hits others in moving water.