Dalmation Stone

Physical Properties

Hardness: 5-7 (Mohs scale); Color: Pale gray, cream, or beige with black/brown spots; Luster: Vitreous to dull; Crystal structure: Microcrystalline; Specific Gravity: 2.5-2.7

Formation & Geological History

Formed during the cooling of peralkaline igneous melt, typically associated with volcanic environments where high-pressure cooling allows for the distinct spotted inclusion of Arfvedsonite.

Uses & Applications

Primarily used as a gemstone for jewelry, beads, cabochons, and decorative carvings. Highly popular in the metaphysical and crystal collecting communities.

Geological Facts

Despite being commonly called Dalmatian Jasper, it is not a jasper (sedimentary) but a peralkaline igneous rock containing quartz, feldspar, and spots of arfvedsonite.

Field Identification & Locations

Identified by its distinctive black tourmaline-like or arfvedsonite spots on a light background. Commonly found and sourced from Chihuahua, Mexico.

Identified on: 4/18/2026

Mode: Standard