mineral

Polished brecciated jasper (likely orbicular/picture jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide staining and breccia fragments

AI-generated identification · may be incorrect

Opaque orange, cream, and black-brown patterned stone with a vitreous-to-waxy luster; likely hardness 6.5–7 Mohs, conchoidal fracture, no obvious cleavage, and specific gravity about 2.5–2.7. The rounded shape and glossy surface indicate tumbling or polishing.

Identified August 9, 2026More mineral →

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At a glance

Common name: Polished brecciated jasper (likely orbicular/picture jasper)
Scientific name: Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide staining and breccia fragments
Category: mineral
Identified: August 9, 2026
Method: Standard

AI Estimated Value

About $5–$25 for a common polished piece; $30–$100+ for unusually attractive patterns, larger size, or documented locality.

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

Silica-rich groundwater replaced or cemented volcanic or sedimentary material, while iron oxides produced the orange and brown colors; brecciation created the dark, irregular patterning. Exact geological age and locality cannot be determined from the photograph.

Uses & applications

Used for cabochons, beads, carvings, ornamental objects, and polished display stones; not typically used as a construction aggregate when sold as a decorative specimen.

Geological facts

Jasper is an opaque variety of chalcedony and can show dramatic “picture” patterns. Strong translucence at the thin edges and resistance to scratching by steel support a quartz-rich identification.

Field identification & locations

Commonly found in volcanic terrains and silica-rich sedimentary zones, including Oregon, Idaho, Utah, Arizona, Madagascar, and Australia. Confirm with a hardness test, streak (white), and lack of reaction to dilute hydrochloric acid.