mineral
Red jasper (likely)
Microcrystalline quartz, SiO₂, colored red by iron oxides
AI-generated identification · may be incorrectOpaque, brick-red piece with a dull to slightly waxy luster and irregular fracture; quartz hardness is about 7 Mohs, though this small rough fragment cannot be tested visually. Jasper has no visible crystal structure or cleavage.
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Physical properties
Opaque, brick-red piece with a dull to slightly waxy luster and irregular fracture; quartz hardness is about 7 Mohs, though this small rough fragment cannot be tested visually. Jasper has no visible crystal structure or cleavage.
Formation & geological history
Jasper forms when silica-rich material becomes impregnated with iron oxides and solidifies, commonly in sedimentary or volcanic settings; its age depends on the deposit.
Uses & applications
Used for beads, cabochons, carvings, and decorative objects; small rough fragments have little commercial value.
Geological facts
Jasper is an opaque variety of chalcedony, a microcrystalline form of quartz.
Field identification & locations
The opaque red color and fine-grained appearance are consistent with jasper, but the image alone cannot rule out another red mineral or a colored material. Jasper occurs worldwide, including in Brazil, India, and the western United States.
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