mineral

Polished brecciated jasper (likely ocean jasper or red jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide hematite/goethite and dark volcanic or manganese-rich inclusions

AI-generated identification · may be incorrect

Opaque, reddish-brown and dark gray-green mottling with a waxy to glassy polish; hardness about 6.5–7 Mohs, no visible cleavage, cryptocrystalline structure, and specific gravity roughly 2.5–2.7. The rounded shape indicates tumbling or natural water wear.

Identified September 12, 2026More mineral →

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At a glance

Common name: Polished brecciated jasper (likely ocean jasper or red jasper)
Scientific name: Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide hematite/goethite and dark volcanic or manganese-rich inclusions
Category: mineral
Identified: September 12, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a common palm stone; $30–$100+ for a large, vividly patterned, confirmed ocean jasper 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

Forms when silica-rich fluids replace or cement volcanic and sedimentary material, with iron oxides producing the red coloration; many jasper deposits formed during the Precambrian to Mesozoic eras. Exact locality cannot be confirmed from the photograph.

Uses & applications

Used for cabochons, carvings, beads, palm stones, and decorative objects; attractive polished pieces are popular with collectors but generally have modest commercial value.

Geological facts

Jasper is a variety of opaque chalcedony, and its patterns result from brecciation, mineral replacement, and fluid movement. Red color commonly reflects hematite inclusions.

Field identification & locations

Identify by its opaque body, red-and-dark patterns, glassy polish, and resistance to scratching; it should scratch glass but not be scratched by a steel knife. Common sources include Madagascar, India, Brazil, Australia, and the western United States.