mineral

Polished orbicular jasper / brecciated jasper bead bracelet

Jasper, microcrystalline quartz (SiO₂), with variable iron oxides and other silicate inclusions

AI-generated identification · may be incorrect

Opaque, rounded polished beads with mottled gray, brown, cream, black, and reddish patterns; typically vitreous to waxy luster and no visible cleavage. Hardness is about 6.5–7 Mohs; specific gravity approximately 2.5–2.7; cryptocrystalline quartz structure.

Identified August 30, 2026More mineral →

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At a glance

Common name: Polished orbicular jasper / brecciated jasper bead bracelet
Scientific name: Jasper, microcrystalline quartz (SiO₂), with variable iron oxides and other silicate inclusions
Category: mineral
Identified: August 30, 2026
Method: Standard

AI Estimated Value

Approximately $10–$40 for a finished bracelet; unusually distinctive natural patterns may reach $50–$100.

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 ash, breccia, or other rock, with iron and manganese producing the colors and orbicular patterns. Deposits are commonly Cenozoic to older, depending on locality.

Uses & applications

Used for beads, cabochons, carvings, and ornamental objects; attractive patterning gives modest jewelry and collector value.

Geological facts

“Jasper” is a broad trade and geological term rather than one single mineral species. The varied patterns may represent orbicules, brecciation, flow textures, or mineral replacement.

Field identification & locations

Identify by its opaque appearance, very fine texture, hardness, and inability to scratch with a steel blade easily; glassy transparent quartz or softer dyed stone may be imitations. Common sources include Madagascar, India, Indonesia, Mexico, and the United States.