sedimentary or metamorphic

Tumbled reddish-brown stone, possibly jasper or iron-rich quartzite

Uncertain from image; likely microcrystalline quartz (SiO₂) with iron-oxide inclusions

AI-generated identification · may be incorrect

Opaque salmon to reddish-brown, fine-grained, weak earthy-to-waxy luster, and rounded/tumbled form. Likely hardness about 6.5–7 Mohs; cleavage absent, with conchoidal or uneven fracture; specific gravity roughly 2.6–2.7.

Identified September 16, 2026More sedimentary or metamorphic →

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At a glance

Common name: Tumbled reddish-brown stone, possibly jasper or iron-rich quartzite
Scientific name: Uncertain from image; likely microcrystalline quartz (SiO₂) with iron-oxide inclusions
Category: sedimentary or metamorphic
Identified: September 16, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a common tumbled piece; $10–$40 if unusually patterned, polished, or sold as quality jasper.

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

If jasper, silica-rich material formed by sedimentary or volcanic deposition followed by silicification; if quartzite, sandstone was metamorphosed and recrystallized. Iron oxides produce the red coloration; age depends on the source deposit.

Uses & applications

Used as a decorative tumbled stone, cabochon, bead, paperweight, and lapidary material; not normally used as an architectural stone in this small form.

Geological facts

The image alone cannot distinguish jasper from quartzite or another iron-rich silicate. A steel file or quartz crystal should not easily scratch it if it is quartz-rich.

Field identification & locations

Commonly found in iron-rich sedimentary or volcanic terrains worldwide, including India, Brazil, Madagascar, Australia, and the United States. Check for a glassy fracture, quartz hardness, and a streak that is usually white to pale brown rather than strongly red.