metamorphic

Yellow serpentine beads (likely processed serpentine)

Serpentine-group minerals, chiefly antigorite/lizardite; approximate formula Mg₃Si₂O₅(OH)₄

AI-generated identification · may be incorrect

Typically olive-yellow to greenish yellow with waxy to greasy luster, Mohs hardness 2.5–4, poor cleavage, and fine-grained or fibrous crystal structure; specific gravity about 2.5–2.6. The rounded, drilled, polished forms indicate jewelry processing.

Identified September 2, 2026More metamorphic →

Explore Yellow serpentine beads (likely processed serpentine) 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: Yellow serpentine beads (likely processed serpentine)
Scientific name: Serpentine-group minerals, chiefly antigorite/lizardite; approximate formula Mg₃Si₂O₅(OH)₄
Category: metamorphic
Identified: September 2, 2026
Method: Standard

AI Estimated Value

Approximately $5–$30 for a common bead strand; higher-quality, well-polished or patterned material may reach $50–$150.

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 ultramafic rocks such as peridotite undergo hydration and metamorphism, commonly in oceanic lithosphere and fault zones; alteration can range from Precambrian to modern geological settings. Exact locality and age cannot be determined from the image.

Uses & applications

Used for beads, carvings, ornamental objects, and low-cost jewelry; massive serpentine is also used decoratively as a marble substitute. Avoid prolonged contact with acids and high heat, which can dull or damage the polish.

Geological facts

Yellow coloration may result from iron-bearing serpentine or surface staining; dark web-like patterns can reflect magnetite, chromite, or alteration veins. Serpentine is the state rock of California.

Field identification & locations

Identify by low hardness, waxy feel, lightweight appearance, and yellow-green color; it can be scratched by a steel knife and is generally softer than jade. Common sources include Italy, China, New Zealand, Canada, California, and Afghanistan.