mineral

Brecciated jasper/chalcedony

Silica-rich breccia composed mainly of microcrystalline quartz (SiO₂), with iron-oxide and possibly epidote or chlorite inclusions

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; mottled gray-green, cream, brown, and red coloration; waxy to dull luster; opaque to slightly translucent edges; no obvious cleavage and conchoidal fracture. The angular pale fragments cemented by darker material indicate brecciation.

Identified August 13, 2026More mineral →

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At a glance

Common name: Brecciated jasper/chalcedony
Scientific name: Silica-rich breccia composed mainly of microcrystalline quartz (SiO₂), with iron-oxide and possibly epidote or chlorite inclusions
Category: mineral
Identified: August 13, 2026
Method: Standard

AI Estimated Value

Typically $5–$30 as a small rough specimen; $20–$100 or more if from a desirable confirmed locality or cut into attractive lapidary material.

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

Likely formed when silica-rich fluids cemented fractured volcanic or hydrothermal rock, with iron oxidation producing red-brown zones. Its precise geological age cannot be determined from the photograph; formation may range from Paleozoic to Cenozoic depending on locality.

Uses & applications

Used as a lapidary and ornamental stone for cabochons, carvings, polished slices, and collectibles; occasionally marketed as brecciated jasper or ocean jasper, though locality confirmation is needed.

Geological facts

The specimen shows a complex breccia texture rather than a single crystal aggregate. Green coloration may reflect chlorite, epidote, or other alteration minerals, while red areas commonly result from hematite or limonite.

Field identification & locations

Identify it by its silica hardness, waxy surface, conchoidal fracture, and angular clasts in a contrasting matrix; it will resist scratching by a steel knife. Common examples occur in volcanic and hydrothermal terrains worldwide, including Madagascar, India, Mexico, and the western United States.