Rock Identifier
Orange jasper (likely tumbled or polished) (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides) — mineral
mineral

Orange jasper (likely tumbled or polished)

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored by iron oxides

AI-generated identification · may be incorrect

Typically Mohs 6.5–7; opaque orange-red with pale inclusions and a vitreous to waxy polish. Quartz has a trigonal crystal structure, but jasper is too fine-grained to show crystals or cleavage.

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Physical properties

Typically Mohs 6.5–7; opaque orange-red with pale inclusions and a vitreous to waxy polish. Quartz has a trigonal crystal structure, but jasper is too fine-grained to show crystals or cleavage.

Formation & geological history

Forms as silica-rich fluids fill cavities or replace material in volcanic and sedimentary settings; iron oxides create its color. Its age depends on the source deposit and cannot be determined from the image.

Uses & applications

Used for cabochons, beads, ornaments, and lapidary collecting; jasper is generally not a major construction material.

Geological facts

Jasper is a broad trade and geological term for opaque, iron-stained chalcedony; color patterns vary greatly by deposit.

Field identification & locations

The vivid orange color, opacity, and polished surface are consistent with jasper, though the photo alone cannot confirm identification. Jasper occurs worldwide, including India, Madagascar, Brazil, and the western United States.