igneous
Dalmatian Stone
Dalmatian Jasper (a trade name for an igneous microcrystalline rock composed mostly of feldspar, quartz, and dravite)
Hardness: 5.5-7 (Mohs); Color: Pale grey, cream, or beige with distinctive black or brown spots; Luster: Dull to vitreous; Crystal Structure: Trigonal/Monoclinic (contained minerals); Specific Gravity: ~2.6.
- Hardness
- 5
- Luster
- Dull to vitreous
Identified More igneous →
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Physical properties
Hardness: 5.5-7 (Mohs); Color: Pale grey, cream, or beige with distinctive black or brown spots; Luster: Dull to vitreous; Crystal Structure: Trigonal/Monoclinic (contained minerals); Specific Gravity: ~2.6.
Formation & geological history
Formed from the solidification of molten magma, typically in vulcanic regions. Its unique spotted appearance is caused by inclusions of dravite (a type of black tourmaline/amphibole) within a fine-grained feldspar-quartz matrix.
Uses & applications
Primarily used in jewelry (beads, cabochons), carvings, and energetic/spiritual practice as a grounding stone.
Geological facts
Despite being called Dalmatian Jasper, it is not actually a jasper (which is a sedimentary silicates stone) but is actually an igneous rock composed primarily of perthitic feldspar and quartz.
Field identification & locations
Identify by its unique 'dog-like' spotted pattern. It is almost exclusively mined in Chihuahua, Mexico. Collectors look for high contrast between the cream base and the dark spots.
