mineral

Tumbled banded jasper (likely)

Microcrystalline quartz/chalcedony, SiO₂, colored by iron oxides; exact variety uncertain from the photo

AI-generated identification · may be incorrect

Small polished pebble with ochre, gray-blue, and dark bands; opaque, waxy-to-dull luster, no visible cleavage, Mohs hardness about 6.5–7. Jasper is microcrystalline and has no crystals visible to the naked eye.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Silica-rich fluids or sediments became lithified and stained by iron-bearing minerals; the source rock’s age and locality cannot be determined from the image. The rounded finish is produced by tumbling.

Uses & applications

Used for beads, cabochons, small carvings, and collecting; this size is mainly decorative.

Geological facts

Jasper is an opaque variety of chalcedony, and its colors and patterns vary widely with impurities and formation conditions.

Field identification & locations

Likely jasper based on its opacity, fine texture, and mottled bands; confirm by hardness and lack of cleavage, since similar-looking rocks can be mistaken for it. Jasper occurs worldwide, including the western United States, India, and Australia.