gemstone

Polished jasper (likely brecciated or scenic jasper)

Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions

AI-generated identification · may be incorrect

Opaque to slightly translucent, reddish-brown with cream patches and subtle mottling; vitreous to waxy luster, cryptocrystalline structure, no visible cleavage, Mohs hardness about 6.5–7, specific gravity approximately 2.6.

Identified August 10, 2026More gemstone →

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At a glance

Common name: Polished jasper (likely brecciated or scenic jasper)
Scientific name: Microcrystalline quartz/chalcedony, SiO₂, with iron-oxide and other mineral inclusions
Category: gemstone
Identified: August 10, 2026
Method: Standard

AI Estimated Value

About $5–$25 for a small common tumbled stone; $25–$100+ for an unusually attractive, large, or locality-specific cabochon.

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 groundwater replaces or fills cavities and fractures, incorporating iron oxides and rock fragments; commonly Cenozoic to older, depending on locality. The rounded, glossy surface indicates human tumbling and polishing.

Uses & applications

Used for cabochons, beads, carvings, ornamental objects, and inexpensive jewelry; polished pieces are primarily valued decoratively.

Geological facts

Jasper is an opaque variety of chalcedony distinguished from agate by its generally higher opacity and abundant impurities. Exact variety and locality cannot be confirmed from the photograph alone.

Field identification & locations

Identify by its opaque earthy coloration, fine-grained texture, lack of cleavage, and resistance to scratching by steel; glass should not easily scratch it. Common sources include India, Madagascar, Brazil, Australia, Mexico, and the western United States.