mineral

Likely tumbled quartz-rich pebble

Quartz (SiO₂), possibly a weathered quartzite or chalcedony pebble

AI-generated identification · may be incorrect

Cream to pale yellow, smooth and rounded from abrasion, with a dull to weakly waxy luster; quartz hardness is Mohs 7, no visible cleavage, and specific gravity about 2.65. The image does not show enough detail for confident identification.

Identified August 11, 2026More mineral →

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Physical properties

Formation & geological history

Likely formed as a silica-rich vein mineral or quartz-bearing metamorphic rock, then weathered and transported in sediment; its geological age cannot be determined from appearance. Yellow coloration may result from iron-oxide staining or surface coating.

Uses & applications

Common quartz pebbles are used decoratively, in landscaping, crafts, and lapidary work; quartzite is also used as aggregate and building stone. This small specimen has little commercial value.

Geological facts

The smooth shape indicates natural abrasion or deliberate tumbling. Quartz is one of Earth’s most abundant and chemically durable minerals.

Field identification & locations

Test with a steel file or knife: genuine quartz should resist scratching, while glass or softer materials scratch more easily; inspect a fresh edge for glassy translucence. Common in river gravels, beaches, veins, and quartzite terrains.