igneous
Dalmatian Jasper
Microcrystalline Quartz with Tourmaline or Arfvedsonite inclusions
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, vitreous luster, opaque, and features a distinctive cream or pale green background with black spots.
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, vitreous luster, opaque, and features a distinctive cream or pale green background with black spots.
Formation & geological history
Formed from silica-rich hydrothermal fluids penetrating volcanic and igneous rocks, crystallizing into microcrystalline quartz.
Uses & applications
Primarily used for making tumbled stones, beads, cabochons, and decorative ornamental carvings.
Geological facts
Despite its trade name containing jasper, scientific analysis shows it is actually a microcrystalline quartz hosting amphibole or tourmaline spots.
Field identification & locations
Easily identifiable by its Dalmatian-dog-like spotting pattern; primarily sourced from Chihuahua, Mexico.
