mineral

Tumbled pale-green quartz-like pebble

Likely quartz (SiO₂), possibly pale-green aventurine or prehnite; exact identification requires testing

AI-generated identification · may be incorrect

Small, rounded and translucent, with a frosted/vitreous luster and no visible cleavage. Quartz has Mohs hardness 7 and specific gravity about 2.65; the apparent green color may result from inclusions or surface treatment.

Identified August 16, 2026More mineral →

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At a glance

Common name: Tumbled pale-green quartz-like pebble
Scientific name: Likely quartz (SiO₂), possibly pale-green aventurine or prehnite; exact identification requires testing
Category: mineral
Identified: August 16, 2026
Method: Standard

AI Estimated Value

About $1–$10 for a tiny common tumbled pebble; roughly $10–$50 if it proves to be attractive natural aventurine or prehnite.

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

Likely a naturally worn or tumbled silica-rich mineral fragment; quartz formed in igneous, hydrothermal, or metamorphic environments over geologic time. The photograph cannot establish geological age or distinguish aventurine from prehnite.

Uses & applications

Common quartz pebbles are inexpensive decorative and lapidary material; attractive varieties are used in jewelry, carvings, and specimens. Industrial quartz is important for glass, ceramics, electronics, and abrasives.

Geological facts

A steel knife should not readily scratch quartz, while quartz can scratch ordinary glass. Prehnite is softer (Mohs 6–6.5) and commonly has a pearly or waxy luster.

Field identification & locations

Common sources include Brazil, Madagascar, India, and the United States. Confirm identity with hardness, streak, magnification, and specific-gravity testing; avoid relying on color alone.