sedimentary

Painted or coated beach pebble

Uncertain; likely quartz-rich sandstone, quartzite, or a rounded silicate pebble with turquoise-colored surface coating

AI-generated identification · may be incorrect

Light gray, smooth, and strongly rounded, with a matte granular surface and an apparent turquoise paint, dye, or mineral coating. Likely hardness about 6–7 Mohs if quartz-rich; cleavage absent and specific gravity roughly 2.6–2.7.

Identified September 20, 2026More sedimentary →

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At a glance

Common name: Painted or coated beach pebble
Scientific name: Uncertain; likely quartz-rich sandstone, quartzite, or a rounded silicate pebble with turquoise-colored surface coating
Category: sedimentary
Identified: September 20, 2026
Method: Standard

AI Estimated Value

$1–$10 as a common pebble or painted stone; potentially $10–$50 if confirmed as an attractive natural mineral specimen.

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

The rounded shape indicates prolonged water or wave abrasion, commonly in stream, lake, or beach environments. The blue-green area appears human-applied or weathered surface material rather than diagnostic natural mineralization; geological age cannot be determined visually.

Uses & applications

Primarily a decorative or craft stone, painted pebble, or garden/beach collectible; little industrial or jewelry value unless testing reveals a distinctive mineral composition.

Geological facts

The turquoise patch could represent paint, copper-mineral staining, or—in rarer cases—chrysocolla or turquoise, but the image alone cannot distinguish them.

Field identification & locations

Check for brush edges, paint film, or color transfer; a streak, hardness test, acid test, and loupe examination would help. Natural quartz-rich pebbles are common worldwide, especially along coasts and rivers.