igneous
Dalmatian Stone
Dalmatian Stone (formerly called Dalmatian Jasper)
Hardness: 5-7 (Mohs); Color: Pale grey, cream, or beige with black or brown spots; Luster: Vitreous to dull; Crystal structure: Microcrystalline aggregate; Cleavage: None
- Hardness
- 5-7 (Mohs)
- Color
- Pale grey, cream, or beige with black or brown spots
- Luster
- Vitreous to dull
Identified More igneous →
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Physical properties
Hardness: 5-7 (Mohs); Color: Pale grey, cream, or beige with black or brown spots; Luster: Vitreous to dull; Crystal structure: Microcrystalline aggregate; Cleavage: None
Formation & geological history
Formed through volcanic processes where peralkaline igneous rock containing quartz and feldspar features needle-like inclusions of arfvedsonite that create the signature spots.
Uses & applications
Primarily used for decorative purposes including jewelry making (beads, cabochons), tumbled stones, carvings, and metaphysical collecting.
Geological facts
Despite being called 'Dalmatian Jasper' for decades, it is actually an igneous rock composed of feldspar and quartz, not a jasper. The black spots are minerals like arfvedsonite, not tourmaline as often misreported.
Field identification & locations
Identify by its distinctive polka-dot appearance resembling a Dalmatian dog breed. It is primarily sourced from Chihuahua, Mexico. Collectors look for high contrast between the background and spots.
