gemstone

Polished brecciated jasper (likely yellow-and-white jasper)

Jasper, an opaque microcrystalline variety of quartz (SiO₂); exact variety cannot be confirmed from the image

AI-generated identification · may be incorrect

Opaque cream, mustard-yellow, and brown angular patches in a polished cabochon, with a vitreous-to-waxy polish; quartz hardness is about 6.5–7 Mohs and crystal structure is trigonal, too fine-grained to see. The surrounding dark beads appear to be separate materials and are not identifiable from this view.

Identified September 27, 2026More gemstone →

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At a glance

Common name: Polished brecciated jasper (likely yellow-and-white jasper)
Scientific name: Jasper, an opaque microcrystalline variety of quartz (SiO₂); exact variety cannot be confirmed from the image
Category: gemstone
Identified: September 27, 2026
Method: Standard

AI Estimated Value

About $5–$30 for a small polished cabochon, depending on size, workmanship, and confirmed 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

Silica-rich fluids cemented or replaced fragmented rock, producing a brecciated pattern; jasper forms in varied settings over geological time, so the specimen’s age and locality cannot be determined visually.

Uses & applications

Used for cabochons, beads, jewelry, and decorative objects; jasper is also collected as an ornamental stone.

Geological facts

Jasper’s colors come from mineral impurities, commonly iron oxides; contrasting angular fragments are characteristic of brecciated varieties.

Field identification & locations

Look for opaque, fine-grained material with irregular, cemented color patches and no visible cleavage; a hardness or locality test would help confirm the identification.