metamorphic

Polished/tumbled quartz-rich pebble, possibly jasper or quartzite

Indeterminate; likely microcrystalline quartz (SiO₂), potentially iron-stained jasper or quartzite

AI-generated identification · may be incorrect

Small rounded specimen with a creamy white body, reddish-brown patches, and dull-to-waxy luster. Quartz has Mohs hardness 7, no cleavage, conchoidal fracture, and specific gravity about 2.65; exact properties require testing.

Identified August 12, 2026More metamorphic →

Explore Polished/tumbled quartz-rich pebble, possibly jasper or quartzite in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

At a glance

Common name: Polished/tumbled quartz-rich pebble, possibly jasper or quartzite
Scientific name: Indeterminate; likely microcrystalline quartz (SiO₂), potentially iron-stained jasper or quartzite
Category: metamorphic
Identified: August 12, 2026
Method: Standard

AI Estimated Value

Typically $1–$10 for a small common tumbled specimen; attractive polished examples may sell for $10–$25.

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 formed from silica-rich rock, with red coloration caused by iron oxides, then naturally rounded or mechanically tumbled and polished. The geological age cannot be determined from the photograph.

Uses & applications

Used as a decorative tumbled stone, craft material, or inexpensive cabochon; quartz-rich rock also has applications in aggregate and construction.

Geological facts

The image is insufficient for a definitive species identification; jasper, quartzite, chalcedony, or an iron-stained quartz pebble are plausible.

Field identification & locations

Test for hardness by checking whether it scratches ordinary glass; inspect with a loupe for granular quartz or waxy chalcedony texture. Common sources include quartz-rich gravels and silica-bearing formations worldwide.