mineral

Polished jasper, likely orbicular or brecciated jasper

Jasper: microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides and other inclusions

AI-generated identification · may be incorrect

Opaque cream, tan, brown, reddish, and gray swirling/brecciated patterns with a waxy-to-dull luster; quartz hardness ~6.5–7 Mohs, no cleavage, cryptocrystalline structure, specific gravity about 2.6.

Identified September 6, 2026More mineral →

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At a glance

Common name: Polished jasper, likely orbicular or brecciated jasper
Scientific name: Jasper: microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides and other inclusions
Category: mineral
Identified: September 6, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a common polished piece; $30–$150+ for large, attractive, or distinctive patterned specimens.

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 cavities or replaces volcanic and sedimentary material, with iron oxides producing the warm colors. Most jasper is geologically young to Precambrian, depending on its host deposit.

Uses & applications

Commonly cut and polished for cabochons, beads, carvings, ornamental objects, and lapidary collections; occasionally used decoratively as tile or veneer.

Geological facts

Jasper is a dense, opaque variety of chalcedony rather than a single mineral species. The specimen appears shaped and polished, so its natural texture and colors may be enhanced by finishing.

Field identification & locations

Identify it by its opaque appearance, multicolored organic patterns, glassy/waxy polish, and inability to scratch with a fingernail or copper coin; a steel file should generally not scratch it. Common sources include India, Madagascar, Brazil, Mexico, Australia, and the western United States.