mineral

Pale-yellow quartz pebble

Quartz (SiO₂), likely massive or microcrystalline quartz

AI-generated identification · may be incorrect

Hardness 7 Mohs; translucent pale yellow to cream, vitreous to slightly dull luster, no cleavage, and conchoidal fracture. The small, water-worn specimen obscures its crystal structure.

Identified October 1, 2026More mineral →

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Physical properties

Hardness 7 Mohs; translucent pale yellow to cream, vitreous to slightly dull luster, no cleavage, and conchoidal fracture. The small, water-worn specimen obscures its crystal structure.

Formation & geological history

Quartz forms in igneous and hydrothermal settings and in sedimentary deposits; this rounded pebble was likely transported and smoothed by water. Its age cannot be determined from the image.

Uses & applications

Quartz is used in glassmaking, electronics, abrasives, and ornamental objects; attractive material may be polished for jewelry or collecting.

Geological facts

Quartz is one of Earth’s most abundant minerals and commonly survives weathering to become sand and rounded stream or beach pebbles.

Field identification & locations

Look for glassy translucence, hardness sufficient to scratch glass, and lack of cleavage; common worldwide in streams, beaches, and quartz-rich rocks. Color alone is not diagnostic, so confirm with simple tests if needed.