mineral

Polished orbicular jasper (likely ocean jasper)

Silicified microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions; exact variety cannot be confirmed from the image

AI-generated identification · may be incorrect

Polished, rounded stone with cream, tan, and muted green-brown patches and possible orbicular patterns. Quartz-rich jasper is typically Mohs 6.5–7, opaque, and has a vitreous-to-waxy luster; its crystals are microscopic.

Identified September 22, 2026More mineral →

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At a glance

Common name: Polished orbicular jasper (likely ocean jasper)
Scientific name: Silicified microcrystalline quartz (SiO₂), with iron-oxide and other mineral inclusions; exact variety cannot be confirmed from the image
Category: mineral
Identified: September 22, 2026
Method: Standard

AI Estimated Value

Approximately $10–$80 for a small polished sphere; size, polish, pattern, and verified variety strongly affect price.

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 fluids fill or replace rock, later acquiring colored mineral inclusions; the specimen’s age and precise formation setting cannot be determined visually. Ocean jasper is notably sourced from Madagascar.

Uses & applications

Commonly cut and polished for spheres, cabochons, beads, and decorative objects; not generally used as an industrial building stone.

Geological facts

Jasper is an opaque variety of chalcedony, a microcrystalline form of quartz. The pictured object appears to be a polished sphere, though its specific jasper variety is uncertain.

Field identification & locations

Look for opaque silica-rich material, mottled colors, and any repeated rounded orb patterns; hardness and a glass-scratching test can help distinguish it from softer imitations. Orbicular jasper is found in several localities, including Madagascar, but appearance alone cannot establish provenance.