metamorphic
Polished red gemstone pendant, likely red jasper or brecciated jasper
Jasper: microcrystalline quartz (SiO₂), commonly with hematite or iron-oxide inclusions
AI-generated identification · may be incorrectOpaque deep red to burgundy, vitreous-to-waxy polish, fine-grained and massive; Mohs hardness about 6.5–7, no visible cleavage, specific gravity roughly 2.5–2.9. The stone is wire-wrapped in metal and cannot be classified confidently from appearance alone.
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Physical properties
Opaque deep red to burgundy, vitreous-to-waxy polish, fine-grained and massive; Mohs hardness about 6.5–7, no visible cleavage, specific gravity roughly 2.5–2.9. The stone is wire-wrapped in metal and cannot be classified confidently from appearance alone.
Formation & geological history
Jasper forms when silica-rich fluids replace or cement volcanic, sedimentary, or altered rock, with iron oxides producing the red color; ages vary widely, commonly Paleozoic to Cenozoic. If the material is ruby or garnet instead, its origin and classification would differ substantially.
Uses & applications
Used for cabochons, pendants, beads, carvings, and decorative objects; the wire-wrapped setting is handcrafted jewelry. Common jasper has modest commercial value.
Geological facts
The uniformly opaque red appearance favors jasper or iron-rich quartz over transparent ruby. A polished surface can hide brecciation, banding, or mineral grains.
Field identification & locations
Field identification: opaque red stone with black, gray, or cream mottling, conchoidal fracture, and no cleavage suggests jasper; streak, refractive index, or hardness testing can distinguish it from garnet and ruby. Common sources include India, Madagascar, Brazil, Australia, and the western United States.
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