mineral

Iron-rich river pebble, possibly hematite-bearing jasper

Hematite-bearing jasper; chiefly microcrystalline quartz (SiO₂) with iron oxides, especially hematite (Fe₂O₃)

AI-generated identification · may be incorrect

Dark reddish-brown, opaque, and earthy to submetallic with irregular conchoidal surfaces; likely hardness 6–7 (quartz-rich) and specific gravity roughly 2.6–3.5. The rounded shape indicates water abrasion; no obvious cleavage or visible crystal structure.

Identified August 27, 2026More mineral →

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At a glance

Common name: Iron-rich river pebble, possibly hematite-bearing jasper
Scientific name: Hematite-bearing jasper; chiefly microcrystalline quartz (SiO₂) with iron oxides, especially hematite (Fe₂O₃)
Category: mineral
Identified: August 27, 2026
Method: Standard

AI Estimated Value

About $1–$10 as a common pebble; $10–$40 if polished, unusually patterned, 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

Formed from silica-rich material colored by oxidized iron, commonly through sedimentary or hydrothermal processes, then weathered and rounded in a stream or coastal environment. Its precise geological age cannot be determined from the image.

Uses & applications

Used as a lapidary material, ornamental stone, pigment source, and occasionally as a low-grade iron ore; attractive pieces may be polished for cabochons or display.

Geological facts

A red streak on unglazed ceramic supports hematite or iron-oxide content; jasper typically gives a white-to-light streak. Magnetism, if present, would suggest magnetite rather than ordinary hematite.

Field identification & locations

Common in iron-rich terrains and gravel beds worldwide, including India, Brazil, Australia, and the western United States. Test with a steel file, streak plate, and magnet; avoid acid testing unless necessary.