gemstone

Polished jasper (likely brecciated or orbicular jasper)

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides and other impurities

AI-generated identification · may be incorrect

Hardness 6.5–7; opaque, brown, black, reddish-orange, and gray-green with swirled or brecciated patterns; vitreous to waxy luster and no visible cleavage. The smooth surface indicates polishing, possibly as a cabochon or tumbled stone.

Identified September 14, 2026More gemstone →

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At a glance

Common name: Polished jasper (likely brecciated or orbicular jasper)
Scientific name: Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides and other impurities
Category: gemstone
Identified: September 14, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a small polished piece; $30–$100+ for unusually attractive patterns, large 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 fluids replace or cement volcanic or sedimentary material, with iron oxides producing red-brown colors; generally Cenozoic to older, depending on locality. The precise variety and age cannot be confirmed from the photograph alone.

Uses & applications

Used for cabochons, beads, carvings, decorative objects, and lapidary specimens; occasionally used as architectural or ornamental stone.

Geological facts

Jasper is an opaque variety of chalcedony and microcrystalline quartz. Patterned varieties are often marketed under locality or trade names such as brecciated jasper, picture jasper, or ocean jasper.

Field identification & locations

Check for glassy hardness, fine-grained texture, opaque body, and inability to scratch it with a steel knife; it should not fizz in dilute acid. Common sources include India, Madagascar, Brazil, Australia, Mexico, and the western United States.