mineral

Mixed gemstone bead bracelet, likely lava rock and aventurine/jade-look beads

Basaltic scoria (vesicular basalt), plus probable serpentine, aventurine, or dyed quartzite beads

AI-generated identification · may be incorrect

The dark, highly porous beads are vesicular basalt/lava rock: black to brown, dull to subvitreous, Mohs 5–6, with abundant gas cavities. Pale green beads are likely serpentine or quartz-rich aventurine; exact identification requires hardness, streak, and specific-gravity tests.

Identified August 18, 2026More mineral →

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At a glance

Common name: Mixed gemstone bead bracelet, likely lava rock and aventurine/jade-look beads
Scientific name: Basaltic scoria (vesicular basalt), plus probable serpentine, aventurine, or dyed quartzite beads
Category: mineral
Identified: August 18, 2026
Method: Standard

AI Estimated Value

Approximately $5–$25 for the complete bracelet; higher only if authenticated as jade or another premium gemstone.

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

Basalt forms from rapidly cooled volcanic lava, commonly during Cenozoic eruptions; vesicles formed as trapped gases expanded. Green ornamental stones may originate from metamorphic or hydrothermal alteration of ultramafic rocks, generally Precambrian to recent depending on locality.

Uses & applications

Used as fashion jewelry, aromatherapy beads, and inexpensive decorative stone; porous lava beads can absorb essential oils. Green beads are valued mainly for color and polish rather than rarity.

Geological facts

The specimen is a manufactured, drilled and polished bead strand rather than a single natural rock. Surface pits and rounded holes strongly indicate vesicular volcanic material.

Field identification & locations

Identify lava beads by their very low density, rough pores, and inability to take a glassy polish; green beads need testing because dyed glass, serpentine, jade, and aventurine can look similar. Common sources include volcanic regions of Indonesia, Italy, Mexico, and Hawaii.