mineral

Yellow-green aventurine or serpentine pendant

Most likely serpentine-group mineral (magnesium silicate), possibly quartz-rich aventurine

AI-generated identification · may be incorrect

Polished, opaque pale yellow-green stone with mottled texture and vitreous-to-waxy luster; typical hardness is about 2.5–4 for serpentine or 6.5–7 for aventurine quartz. No visible cleavage or crystal faces; specific gravity commonly 2.5–2.7.

Identified August 22, 2026More mineral →

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At a glance

Common name: Yellow-green aventurine or serpentine pendant
Scientific name: Most likely serpentine-group mineral (magnesium silicate), possibly quartz-rich aventurine
Category: mineral
Identified: August 22, 2026
Method: Standard

AI Estimated Value

Approximately $10–$40 for a common polished pendant; $50–$150 for unusually attractive, well-crafted, or confirmed jade-quality material.

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

Serpentine forms when ultramafic rocks are hydrothermally altered, generally in ancient oceanic crust and mountain belts; aventurine forms in silica-rich veins or metamorphic rocks. Exact age and identity require hardness, streak, and mineralogical testing.

Uses & applications

Used for cabochons, pendants, carvings, and decorative objects; serpentine is also used as ornamental stone and occasionally dimension stone. Value is primarily determined by color, pattern, polish, and craftsmanship.

Geological facts

The bright color may be natural or enhanced by dye, wax, or coating. Serpentine should not be confused with jade; visual identification alone cannot reliably distinguish them.

Field identification & locations

Common serpentine sources include California, Canada, Italy, New Zealand, and Afghanistan; green aventurine is widespread in India, Brazil, and Russia. Test inconspicuously with a steel blade: easy scratching suggests serpentine, while quartz-rich material resists scratching.