mineral

Polished banded jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide and other mineral inclusions

AI-generated identification · may be incorrect

A small, rounded, polished stone with yellow-orange and dark green-gray bands. Quartz hardness is about 7 Mohs; jasper has a fine-grained, opaque texture and vitreous-to-dull luster. Its exact mineral composition cannot be confirmed from the image alone.

Identified October 13, 2026More mineral →

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Physical properties

Formation & geological history

Forms when silica-rich fluids fill cavities or replace material in rock, with impurities producing its colors and patterns; jasper deposits occur in rocks of many geological ages.

Uses & applications

Used for beads, cabochons, ornaments, and lapidary collecting; it has no major structural use.

Geological facts

Jasper is prized for its varied patterns, and trade names often describe appearance rather than a formally distinct mineral species.

Field identification & locations

The opaque, fine-grained body and natural-looking color bands are consistent with jasper. Similar material occurs worldwide; a tumbled specimen typically sells for about $1–$10, depending on size and pattern.