mineral
Tumbled brecciated jasper (likely)
Jasper, an opaque microcrystalline variety of quartz (SiO₂), with iron-oxide-rich zones
AI-generated identification · may be incorrectSmall polished pebble with gray, cream, and rust-brown patches; Mohs hardness 6.5–7, vitreous to waxy luster, microcrystalline structure, no visible cleavage. The image does not allow a certain variety-level identification.
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Physical properties
Small polished pebble with gray, cream, and rust-brown patches; Mohs hardness 6.5–7, vitreous to waxy luster, microcrystalline structure, no visible cleavage. The image does not allow a certain variety-level identification.
Formation & geological history
Silica-rich fluids filled fractures in rock and later hardened, with iron oxides producing the brown-red colors; its geological age and exact source cannot be determined from the photo.
Uses & applications
Primarily used for jewelry, beads, and decorative carvings; polished pieces are inexpensive collectibles.
Geological facts
Jasper is an opaque chalcedony, and its varied patterns come from impurities and mineral inclusions.
Field identification & locations
Look for a hard, opaque stone with mottled colors and a smooth polish; similar material occurs worldwide in silica-rich deposits. The small size and appearance are consistent with a tumbled specimen, but confirm identification with hardness or mineral testing.
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