gemstone

Polished orbicular jasper earrings

Orbicular jasper, an opaque microcrystalline variety of quartz (primarily SiO₂) with iron-oxide and other mineral inclusions

AI-generated identification · may be incorrect

Typically Mohs 6.5–7, opaque, with pink, red, cream, gray, and black orbicular patterns; waxy to dull luster and no visible cleavage. The photographed stones are polished cabochons set in likely 925 sterling silver.

Identified August 27, 2026More gemstone →

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At a glance

Common name: Polished orbicular jasper earrings
Scientific name: Orbicular jasper, an opaque microcrystalline variety of quartz (primarily SiO₂) with iron-oxide and other mineral inclusions
Category: gemstone
Identified: August 27, 2026
Method: Standard

AI Estimated Value

Approximately $15–$60 for common finished earrings; $75–$200+ for high-quality, unusual orbicular jasper with verified provenance and quality silverwork.

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 replace or cement volcanic sediments, producing concentric mineral aggregates; some orbicular jaspers are associated with volcanic environments and may be Paleozoic to Cenozoic, depending on locality. Common sources include Madagascar, Indonesia, Mexico, Australia, and the western United States.

Uses & applications

Used for cabochons, earrings, pendants, beads, carvings, and lapidary collections; not generally used structurally because it occurs as decorative stone.

Geological facts

Orbicular patterns result from radiating or concentric growth of silica and accessory minerals, rather than true fossils. Exact locality cannot be confirmed from the image alone.

Field identification & locations

Identify by its hardness, opaque pink-red matrix, and distinctive rounded orb patterns; it should not show glassy transparency like agate. Avoid harsh chemicals and prolonged heat, and verify silver marks separately.