sedimentary

Brecciated jasper (likely ocean jasper or red jasper breccia)

Silica-rich microcrystalline quartz/chalcedony (SiO₂) with hematite/goethite and iron-oxide matrix

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; opaque cream to pink stone with dark red angular patches, waxy to dull luster, and no visible cleavage. The pattern indicates brecciation and later silica cementation; specific gravity is typically 2.5–2.7.

Identified August 15, 2026More sedimentary →

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At a glance

Common name: Brecciated jasper (likely ocean jasper or red jasper breccia)
Scientific name: Silica-rich microcrystalline quartz/chalcedony (SiO₂) with hematite/goethite and iron-oxide matrix
Category: sedimentary
Identified: August 15, 2026
Method: Standard

AI Estimated Value

About $5–$25 as a hand specimen; $20–$100 or more when polished, unusually patterned, or sold as verified ocean jasper.

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

Formed when silica-rich fluids cemented fractured volcanic or sedimentary material, with iron oxides producing the red coloration. Comparable jasper varieties commonly formed in volcanic environments during the Precambrian to Mesozoic, depending on locality.

Uses & applications

Used for cabochons, beads, carvings, polished stones, and ornamental objects; occasionally used as decorative aggregate. Value is primarily aesthetic and depends on color, pattern, polish, and provenance.

Geological facts

The angular red fragments distinguish brecciated jasper from uniformly colored jasper. Exact identification and locality cannot be confirmed from a photograph alone.

Field identification & locations

Field identification relies on its opaque appearance, quartz-like hardness, conchoidal fracture, and inability to scratch with a steel knife; it should resist dilute acid. Common sources include Madagascar, India, Brazil, Mexico, and the western United States.