metamorphic
Tumbled dalmatian jasper (likely)
Trade name for a spotted, silica-rich rock; commonly quartz/chalcedony with dark inclusions, though this specimen may be another spotted feldspar-bearing stone
AI-generated identification · may be incorrectPolished, cream-to-tan body with irregular black spots and a vitreous-to-waxy luster. If jasper, hardness is about 6.5–7 Mohs; exact mineralogy and crystal structure cannot be confirmed from the image.
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Physical properties
Polished, cream-to-tan body with irregular black spots and a vitreous-to-waxy luster. If jasper, hardness is about 6.5–7 Mohs; exact mineralogy and crystal structure cannot be confirmed from the image.
Formation & geological history
Silica-rich material formed through geological processes and later cut and tumbled; the specimen’s exact source and age cannot be determined visually.
Uses & applications
Commonly sold as a decorative tumbled stone, for jewelry, beads, and small carvings.
Geological facts
“Dalmatian jasper” is a commercial name, not a precise mineralogical identification; spotted appearance alone does not establish jasper composition.
Field identification & locations
The polished surface and contrasting dark inclusions are consistent with spotted jasper-like material. A hardness test, streak, and closer examination of its texture would help distinguish it from spotted feldspar or other stones.
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