mineral

Polished iron-rich stone, possibly hematite-bearing jasper

Likely hematite (Fe₂O₃) with silica-rich jasper or quartz; exact identification cannot be confirmed from the photo

AI-generated identification · may be incorrect

Rounded, polished specimen with gray, reddish-brown, and metallic-looking patches. Hematite has Mohs hardness 5–6.5, metallic to earthy luster, and trigonal crystal structure; jasper is microcrystalline quartz, hardness 7, with no visible cleavage.

Identified October 11, 2026More mineral →

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At a glance

Common name: Polished iron-rich stone, possibly hematite-bearing jasper
Scientific name: Likely hematite (Fe₂O₃) with silica-rich jasper or quartz; exact identification cannot be confirmed from the photo
Category: mineral
Identified: October 11, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a small common polished specimen; more if larger, distinctive, or verified as a rarer material.

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

Iron oxides can form through oxidation and mineral deposition; jasper forms when silica-rich fluids fill or replace rock. Age and specific formation environment are not determinable from appearance alone.

Uses & applications

Polished specimens are used for collecting and ornament; hematite is also an important iron ore and pigment source.

Geological facts

Hematite commonly leaves a reddish-brown streak, even when its surface appears dark or metallic.

Field identification & locations

A streak test on unglazed porcelain and hardness testing can help distinguish hematite from jasper or other polished stones. Both occur widely; the image alone does not establish locality or a definitive identification.