mineral

White quartz pebble

Quartz, silicon dioxide (SiO₂), likely milky quartz

AI-generated identification · may be incorrect

Typically hardness 7 Mohs, white to translucent, vitreous to waxy luster, and no cleavage with conchoidal fracture; this rounded specimen has a weathered, matte surface. Specific gravity is about 2.65.

Identified August 25, 2026More mineral →

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Physical properties

Formation & geological history

Milky quartz forms when silica-rich fluids crystallize in igneous or metamorphic veins, then survives erosion as a water-rounded pebble; its exact age and locality cannot be determined from the image.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and engineered stone; attractive polished pieces are inexpensive decorative or collecting specimens.

Geological facts

The cloudy appearance results from microscopic fluid inclusions, fractures, or impurities scattering light. Quartz is one of Earth’s most abundant and durable minerals.

Field identification & locations

Identify it by its white translucent appearance, lack of cleavage, glassy fracture, and ability to scratch ordinary glass; the rounded form suggests stream, beach, or glacial transport. Common worldwide, especially in quartz veins and gravel deposits.