mineral
Tumbled red jasper
Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides
AI-generated identification · may be incorrectTypically Mohs 6.5–7; vivid red-orange with mottled pale patterns, opaque and waxy to vitreous when polished. Quartz has a trigonal crystal structure, but jasper is too fine-grained for visible crystals; no distinct cleavage.
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Physical properties
Typically Mohs 6.5–7; vivid red-orange with mottled pale patterns, opaque and waxy to vitreous when polished. Quartz has a trigonal crystal structure, but jasper is too fine-grained for visible crystals; no distinct cleavage.
Formation & geological history
Forms as silica-rich material that fills cavities or replaces sediment, with iron oxides producing the color. Jasper deposits occur in rocks of many ages and settings.
Uses & applications
Used for beads, cabochons, ornaments, and small polished collectibles; not generally used as a major construction material.
Geological facts
Jasper is a trade and descriptive name rather than one single mineral species; its patterns and colors vary widely.
Field identification & locations
The opaque, iron-colored body and polished finish are consistent with jasper, though a photo cannot confirm the identification. Found worldwide, including India, Brazil, Australia, and the United States.
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