mineral

Polished jasper, likely brecciated or orbicular jasper

Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and other mineral impurities

AI-generated identification · may be incorrect

Opaque, multicolored gray, cream, orange, and brown with mottled/brecciated patterns; dull to waxy luster and no visible crystal faces. Quartz hardness is about Mohs 6.5–7; conchoidal fracture, very fine-grained structure, and typically low porosity, though the visible holes may be natural cavities.

Identified August 27, 2026More mineral →

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At a glance

Common name: Polished jasper, likely brecciated or orbicular jasper
Scientific name: Microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and other mineral impurities
Category: mineral
Identified: August 27, 2026
Method: Standard

AI Estimated Value

About $5–$30 as a common polished hand specimen; roughly $30–$150 for unusually attractive patterns, size, or confirmed collectible 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

Forms when silica-rich groundwater fills or replaces volcanic ash, fractures, or cavities, with iron oxides producing orange-brown colors. Most jasper is Cenozoic to older, but this specimen’s exact age and locality cannot be determined from the image.

Uses & applications

Used for cabochons, carvings, polished display stones, beads, and lapidary décor; occasionally used as a minor ornamental stone. It is not generally used as structural construction material.

Geological facts

Jasper is a variety of opaque chalcedony rather than a single mineral species. Strong banding or angular fragments can indicate brecciated jasper, while rounded orb-like patterns may indicate orbicular jasper.

Field identification & locations

Identify it by its opacity, fine texture, hardness, waxy surface, and resistance to scratching by steel; quartz-rich jasper can scratch glass. Common sources include India, Madagascar, Brazil, Australia, Mexico, and the western United States; exact identification requires locality or testing.