mineral

Tumbled quartz-rich stone, likely milky quartz or quartzite

Quartz (SiO₂), possibly quartzite if composed of interlocked quartz grains

AI-generated identification · may be incorrect

Pale cream to translucent, with a vitreous-to-waxy luster and conchoidal-looking fractures; quartz hardness is 7 Mohs, with no cleavage and a typical specific gravity near 2.65. The rounded edges suggest tumbling or natural abrasion, while the granular texture may indicate quartzite.

Identified September 8, 2026More mineral →

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Physical properties

Formation & geological history

Quartz crystallizes from silica-rich magma or hydrothermal fluids; quartzite forms when quartz sandstone is metamorphosed. Its exact geological age and locality cannot be determined from the photograph.

Uses & applications

Common quartz is used in glass, ceramics, abrasives, electronics, and countertops; attractive pieces are used as decorative or teaching specimens. This specimen appears primarily ornamental or educational.

Geological facts

Quartz is one of Earth’s most abundant minerals and is a major component of many sands and continental rocks. A glass-scratch test can help distinguish it from softer pale stones, though it may damage the specimen.

Field identification & locations

Likely sources include quartz veins, quartz-rich metamorphic rocks, river gravels, and commercial tumbling mixes. Look for hardness, lack of cleavage, translucent edges, and a white streak; acid reaction would suggest carbonate rather than quartz.