igneous
Dalmatian Jasper
Microgranular quartz with amphibole and tourmaline inclusions
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, cream or beige base color with distinctive black or dark brown spots, vitreous luster, and microcrystalline structure.
Identified More igneous →
Explore Dalmatian Jasper in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness of 6.5 to 7 on the Mohs scale, cream or beige base color with distinctive black or dark brown spots, vitreous luster, and microcrystalline structure.
Formation & geological history
Formed as an igneous microgranite or pegmatite intrusive rock, later altered by hydrothermal activity and weathering processes.
Uses & applications
Commonly used for lapidary work, carved decorative objects, tumbled stones, and holistic crystal healing jewelry.
Geological facts
Despite its trade name, Dalmatian Jasper is not technically a true jasper but rather a fine-grained igneous rock containing tourmaline spots.
Field identification & locations
Easily identified in the field by its distinct Dalmatian dog-like black spots scattered across a light feldspar-rich matrix; primarily sourced from Chihuahua, Mexico.
