gemstone

Polished jasper bead necklace

Jasper, an opaque, microcrystalline variety of quartz (SiO₂), colored by mineral impurities; some beads may be patterned brecciated or orbicular jasper.

AI-generated identification · may be incorrect

Mohs hardness about 6.5–7; beads show brown, red, tan, and cream patterns with a polished, vitreous-to-waxy luster. Quartz’s trigonal crystal structure is microscopic; cleavage is absent and fracture is typically uneven.

Identified October 11, 2026More gemstone →

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At a glance

Common name: Polished jasper bead necklace
Scientific name: Jasper, an opaque, microcrystalline variety of quartz (SiO₂), colored by mineral impurities; some beads may be patterned brecciated or orbicular jasper.
Category: gemstone
Identified: October 11, 2026
Method: Standard

AI Estimated Value

Approximately $10–$50 for a common jasper bead necklace, depending on bead quality, craftsmanship, and materials.

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

Jasper forms when silica-rich fluids or sediments become silicified, often with iron oxides producing red and brown colors. Deposits occur in many ages and settings; the image shows cut and polished beads rather than natural surfaces.

Uses & applications

Used in jewelry and decorative objects; jasper is also collected as a lapidary material.

Geological facts

Jasper is an umbrella term for opaque, patterned chalcedony, and bead colors can come from iron-bearing inclusions or contrasting mineral fragments.

Field identification & locations

Look for opaque, fine-grained material with distinctive mottling or bands; confirm by hardness and a glassy fracture on an inconspicuous raw surface, since polished beads alone can be difficult to distinguish. Jasper occurs worldwide, including India, Brazil, Madagascar, and the western United States.