mineral

Polished ocean jasper (orbicular jasper), probable

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

AI-generated identification · may be incorrect

Hardness about 6.5–7 Mohs; opaque, waxy to dull luster, with muted green-gray, salmon, cream, and brown colors. It has no visible crystal faces and typically breaks with conchoidal fracture; the apparent polish indicates human processing.

Identified September 13, 2026More mineral →

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At a glance

Common name: Polished ocean jasper (orbicular jasper), probable
Scientific name: Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide and other mineral inclusions
Category: mineral
Identified: September 13, 2026
Method: Standard

AI Estimated Value

About $3–$20 for a small polished piece; $20–$100+ for larger, vividly patterned or confirmed high-quality ocean jasper.

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 volcanic material was deposited and later filled or replaced by chalcedony, with iron and other inclusions producing the colors and patterns. Orbicular jasper is commonly associated with Miocene volcanic rocks, especially in Madagascar, though this small specimen cannot be proven from the image alone.

Uses & applications

Used for cabochons, beads, carvings, and ornamental stones; attractive pieces are popular with collectors but are not usually high-value gemstones.

Geological facts

Ocean jasper is a trade name, not a single formally defined mineral species. The specimen’s compact, fine-grained appearance and pastel coloration are consistent with jasper, but lighting and limited view prevent definitive identification.

Field identification & locations

Identify by its opaque fine grain, glassy/waxy polish, hardness, and resistance to scratching by steel; acid produces no obvious reaction. Common sources include Madagascar, Mexico, India, and the western United States.