gemstone

Vintage-style bracelet with likely black onyx and yellow-and-white jasper or agate cabochon

Onyx (cryptocrystalline quartz, SiO₂); central stone appears to be patterned jasper or agate (chalcedony, SiO₂), though identification from the image is uncertain

AI-generated identification · may be incorrect

Polished cabochons with glossy luster; quartz varieties have hardness about 6.5–7 Mohs and lack visible crystal faces. The black stones and central yellow-white stone are set in copper-colored metal; the central pattern may be natural or treated.

Identified September 27, 2026More gemstone →

Explore Vintage-style bracelet with likely black onyx and yellow-and-white jasper or agate cabochon in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Vintage-style bracelet with likely black onyx and yellow-and-white jasper or agate cabochon
Scientific name: Onyx (cryptocrystalline quartz, SiO₂); central stone appears to be patterned jasper or agate (chalcedony, SiO₂), though identification from the image is uncertain
Category: gemstone
Identified: September 27, 2026
Method: Standard

AI Estimated Value

Approximately $10–$60 USD for a costume or vintage bracelet; value depends on age, workmanship, materials, and verified stone identity.

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

Onyx and jasper/agate form as silica-rich deposits in veins or cavities, often through successive mineral deposition. Their geological ages vary by deposit; the bracelet itself is a processed jewelry item.

Uses & applications

Decorative jewelry and collecting; these stones are commonly cut and polished for cabochons, beads, and ornaments.

Geological facts

The rounded, domed stones are cabochons, a cut that emphasizes color and pattern rather than sparkle.

Field identification & locations

Black onyx is typically uniformly dark and opaque; jasper is opaque and patterned, while agate is often translucent at thin edges. Confirm the central stone and whether any color treatment is present through gemological testing; the metal setting is not identifiable from the photo.