mineral

Polished jasper (likely brecciated or iron-rich jasper)

Microcrystalline quartz (SiO₂), colored by iron oxides/hydroxides and possibly sulfide minerals

AI-generated identification · may be incorrect

Opaque, multicolored red, brown, yellow, gray, and metallic-looking patches with a waxy to vitreous polish; quartz hardness is about 6.5–7 Mohs, with no visible cleavage. The irregular color pattern suggests brecciation or iron-rich mineralization.

Identified August 10, 2026More mineral →

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At a glance

Common name: Polished jasper (likely brecciated or iron-rich jasper)
Scientific name: Microcrystalline quartz (SiO₂), colored by iron oxides/hydroxides and possibly sulfide minerals
Category: mineral
Identified: August 10, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a common polished piece; roughly $30–$100+ for an unusually attractive, well-provenanced specimen.

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

Jasper forms when silica-rich fluids replace or cement volcanic, sedimentary, or hydrothermal material; iron oxidation produces the red-yellow coloration. Exact geological age and locality cannot be determined from the photograph.

Uses & applications

Used as an ornamental stone, cabochon, lapidary carving, and collectible polished specimen; generally unsuitable for structural construction. Value is mainly decorative and depends on pattern, polish, and provenance.

Geological facts

The metallic gold appearance may be iron oxide, mica, or a sulfide such as pyrite, though a photograph cannot confirm the mineral. Similar material is marketed as brecciated jasper, ocean jasper, or iron jasper depending on its true texture and locality.

Field identification & locations

Commonly found in volcanic and hydrothermal regions, including parts of Australia, the western United States, Mexico, and Madagascar. Test with a steel file or quartz cautiously: genuine jasper resists scratching, while streak, specific gravity, and close inspection can distinguish it from slag or glass.