mineral

Polished brecciated jasper (likely dragon-blood or leopard jasper)

Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; opaque, dark reddish-brown to black with orange-red veins; vitreous to waxy luster; cryptocrystalline quartz, with no visible cleavage and conchoidal fracture. The rounded shape indicates tumbling and polishing.

Identified August 16, 2026More mineral →

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At a glance

Common name: Polished brecciated jasper (likely dragon-blood or leopard jasper)
Scientific name: Jasper, microcrystalline quartz (SiO₂) with iron-oxide inclusions
Category: mineral
Identified: August 16, 2026
Method: Standard

AI Estimated Value

Typically $3–$20 for a small tumbled piece; approximately $20–$75 if unusually large, vividly patterned, or sold as a quality cabochon.

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 cement fine-grained volcanic or sedimentary material, with iron oxides producing the red-orange coloration; deposits are generally ancient, commonly Paleozoic or older. Exact locality cannot be determined from the photograph.

Uses & applications

Used as ornamental stone, cabochons, beads, carvings, and tumbled specimens; occasionally used for decorative tile and small art objects.

Geological facts

Jasper is an opaque variety of chalcedony or microcrystalline quartz, unlike translucent agate. Red coloration typically comes from hematite or other iron oxides.

Field identification & locations

Identify by its opaque fine grain, strong polish, hardness, and irregular iron-red pattern; it should resist scratching by a steel knife. Common sources include Australia, Madagascar, South Africa, Brazil, and the western United States.