mineral

Tumbled pale-green mineral specimen, likely aventurine or serpentine

Quartzite with fuchsite (aventurine) or serpentine-group mineral; exact identification requires testing

AI-generated identification · may be incorrect

Pale mint-green, opaque, smoothly tumbled, with a dull-to-waxy luster and subtle mottling. Likely hardness about 3–7 Mohs depending on composition; no visible cleavage or crystal faces.

Identified August 19, 2026More mineral →

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At a glance

Common name: Tumbled pale-green mineral specimen, likely aventurine or serpentine
Scientific name: Quartzite with fuchsite (aventurine) or serpentine-group mineral; exact identification requires testing
Category: mineral
Identified: August 19, 2026
Method: Standard

AI Estimated Value

About $2–$15 for a common tumbled stone; $20–$75 for unusually attractive, larger, or verified 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

Pale mint-green, opaque, smoothly tumbled, with a dull-to-waxy luster and subtle mottling. Likely hardness about 3–7 Mohs depending on composition; no visible cleavage or crystal faces.

Formation & geological history

Green aventurine forms when quartzite recrystallizes with fuchsite mica; serpentine forms by hydration and alteration of ultramafic rocks. These are generally ancient metamorphic materials, commonly Paleozoic or older.

Uses & applications

Used as a decorative stone, cabochon, bead, worry stone, and inexpensive lapidary material; not typically used structurally.

Geological facts

The image alone cannot distinguish aventurine from pale serpentine, nephrite, or dyed stone. A streak, hardness, specific-gravity, and refractive-index test would improve identification.

Field identification & locations

Aventurine may show tiny glittering mica flashes and scratches glass; serpentine is softer, waxier, and usually scratches with a steel knife. Common sources include India, Brazil, Russia, China, and the United States.