sedimentary

Rounded pebble, likely mixed lithology

Lithology uncertain; possibly a fine-grained metamorphic or volcanic rock with a quartz-rich/pink feldspar vein or inclusion

AI-generated identification · may be incorrect

Gray-green, fine-grained, water-worn pebble with a pinkish patch; hardness, luster, and mineral composition cannot be reliably determined from the image. The beach sediment and rounded shape suggest prolonged abrasion, not a diagnostic crystal structure or cleavage.

Identified September 27, 2026More sedimentary →

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At a glance

Common name: Rounded pebble, likely mixed lithology
Scientific name: Lithology uncertain; possibly a fine-grained metamorphic or volcanic rock with a quartz-rich/pink feldspar vein or inclusion
Category: sedimentary
Identified: September 27, 2026
Method: Standard

AI Estimated Value

Usually under $1–$5 as an ordinary pebble; higher value would require a confirmed, desirable rock type.

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 eroded fragment transported and rounded by water; its original rock type and geological age cannot be established from appearance alone.

Uses & applications

Primarily a beach find or teaching/collection specimen; no specific industrial or jewelry use can be identified without testing.

Geological facts

The contrasting pink area may be a separate mineral-rich part of the pebble or a vein, but the photograph does not distinguish these possibilities.

Field identification & locations

A rounded shape and smooth surface indicate water transport. A fresh break, hardness test, and closer examination of grain size and mineral grains would help identify it; beach pebbles occur on coastlines worldwide.