mineral

Tumbled white quartz pebble

Quartz (silicon dioxide, SiO₂)

AI-generated identification · may be incorrect

Hardness 7 Mohs; white to translucent, vitreous-to-waxy luster, often granular or cryptocrystalline, with no true cleavage and conchoidal fracture. The rounded shape indicates tumbling or natural water wear.

Identified August 26, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich igneous, hydrothermal, and metamorphic fluids; this specimen may derive from quartz vein material or quartz-rich sediment. Quartz is widespread from Precambrian rocks to the present.

Uses & applications

Common quartz pebbles are used for decoration, landscaping, crafts, and teaching; clear varieties are used in jewelry and electronics. This small specimen has modest collector value.

Geological facts

Its white color commonly results from microscopic fluid inclusions or fractures scattering light. Quartz is one of Earth’s most abundant and chemically durable minerals.

Field identification & locations

Identify it by its glassy/waxy appearance, lack of cleavage, conchoidal breakage, and ability to scratch ordinary glass. Common worldwide, especially in river gravels, quartz veins, and quartz-rich sands.