gemstone

Brecciated jasper (likely mookaite or rhyolitic jasper)

Microcrystalline quartz (SiO₂), commonly mixed with iron oxides and clay minerals

AI-generated identification · may be incorrect

Opaque, pink-tan and brown angular fragments with dark fracture lines; dull to waxy luster, cryptocrystalline structure, no visible cleavage, Mohs hardness about 6.5–7, specific gravity roughly 2.5–2.7.

Identified September 7, 2026More gemstone →

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At a glance

Common name: Brecciated jasper (likely mookaite or rhyolitic jasper)
Scientific name: Microcrystalline quartz (SiO₂), commonly mixed with iron oxides and clay minerals
Category: gemstone
Identified: September 7, 2026
Method: Standard

AI Estimated Value

About $2–$15 for a small common tumbled or rough piece; $20–$100+ for attractive, provenance-labeled cabochons or specimens.

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 sediment or volcanic material is fractured, then cemented and replaced by chalcedony/quartz and iron oxides. Jasper deposits range from Precambrian to Cenozoic; the exact age and variety cannot be determined from the image.

Uses & applications

Used for cabochons, beads, carvings, small tumbled stones, and decorative objects; generally ornamental rather than industrial.

Geological facts

The angular pattern is brecciation, distinguishing it from uniformly banded agate. Its pink coloration may result from iron oxides, while dark seams are silica-rich or iron-stained fractures.

Field identification & locations

Identify by its opaque fine-grained texture, high hardness, lack of cleavage, and resistance to scratching by steel. Common sources include Australia, the western United States, Madagascar, and India; a locality label is needed for a precise variety.