mineral
Yellow-orange translucent pebble, possibly chalcedony (agate)
Chalcedony, microcrystalline quartz (SiO₂); identification is tentative from the photo
AI-generated identification · may be incorrectSmall, rounded, translucent yellow-orange piece with a dull to waxy surface; quartz has Mohs hardness 7 and a trigonal crystal structure, though individual crystals are microscopic. No obvious cleavage; specific gravity is about 2.6.
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Physical properties
Small, rounded, translucent yellow-orange piece with a dull to waxy surface; quartz has Mohs hardness 7 and a trigonal crystal structure, though individual crystals are microscopic. No obvious cleavage; specific gravity is about 2.6.
Formation & geological history
If chalcedony, it formed as silica-rich fluids deposited quartz in rock cavities or fractures; such deposits occur across many geological ages and settings.
Uses & applications
Chalcedony is used for beads, cabochons, carvings, and collectible polished stones; this piece appears small and unworked.
Geological facts
Chalcedony is a fine-grained form of quartz, and banded varieties are commonly called agate.
Field identification & locations
A hardness or streak test and inspection for banding would help distinguish chalcedony from other yellow pebbles. Chalcedony is widespread in volcanic cavities and sedimentary deposits worldwide.
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