mineral

Likely tumbled brown stone, possibly smoky quartz or jasper

Uncertain from the blurred image; possible quartz (SiO₂) or iron-rich jasper/chert

AI-generated identification · may be incorrect

Rounded and polished, opaque to slightly translucent, brown-gray, with a dull to vitreous luster. Quartz would have Mohs hardness 7 and no cleavage; jasper/chert is microcrystalline quartz, also about 6.5–7.

Identified September 16, 2026More mineral →

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At a glance

Common name: Likely tumbled brown stone, possibly smoky quartz or jasper
Scientific name: Uncertain from the blurred image; possible quartz (SiO₂) or iron-rich jasper/chert
Category: mineral
Identified: September 16, 2026
Method: Standard

AI Estimated Value

Usually $1–$10 for a common tumbled pebble; approximately $10–$40 if it proves to be an attractive, high-quality jasper or smoky-quartz specimen.

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 silica-rich pebble later tumbled or polished; quartz-bearing material commonly forms in veins and volcanic or sedimentary rocks. Its geological age cannot be determined from the photograph.

Uses & applications

Suitable as a low-cost lapidary, craft, or collecting specimen; attractive varieties may be used in cabochons and decorative objects.

Geological facts

The visible pale patch could reflect quartz veining, weathering, or surface glare, but the image is too out of focus for confident identification.

Field identification & locations

Test on an inconspicuous area: it should scratch glass if quartz-rich, while a steel knife should not scratch it. Common sources include Brazil, India, Madagascar, and regional river gravels.