mineral

Small tumbled stone, likely quartz-rich pebble

Probably microcrystalline quartz (SiO₂), but the image is insufficient for a definitive identification

AI-generated identification · may be incorrect

Tan-brown, opaque to slightly translucent, dull-to-waxy luster, irregular rounded shape, and no visible crystal faces or cleavage. Quartz has Mohs hardness 7 and specific gravity about 2.65; the specimen may also contain iron-oxide staining or other silicates.

Identified September 12, 2026More mineral →

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At a glance

Common name: Small tumbled stone, likely quartz-rich pebble
Scientific name: Probably microcrystalline quartz (SiO₂), but the image is insufficient for a definitive identification
Category: mineral
Identified: September 12, 2026
Method: Standard

AI Estimated Value

About $1-$10 as an ordinary pebble; up to $10-$30 if attractively patterned, polished, or demonstrably unusual.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Likely a naturally weathered and possibly tumbled river or beach pebble formed from silica-rich bedrock; its geological age cannot be determined visually. Rounded edges indicate abrasion or human tumbling.

Uses & applications

Small quartz pebbles are used as lapidary material, decorative stones, and inexpensive collectibles; quality depends on translucency, pattern, and polish.

Geological facts

A scratch test against glass can help confirm quartz, though it may damage the specimen; color alone is not diagnostic.

Field identification & locations

Common in river gravels, beaches, and quartz-bearing rocks worldwide. Field identification requires hardness testing, streak, translucency, and ideally acid or mineralogical tests.