Dalmatian Stone

Physical Properties

Hardness: 5.5 to 7.0 (Mohs scale); Color: White to cream-gray with black or dark brown spots; Luster: Vitreous to dull; Crystal structure: Microcrystalline; Specific gravity: 2.58 to 2.91

Formation & Geological History

Formed from cooling magma that crystallized rapidly, preventing mineral separation. The white matrix is primarily quartz and feldspar, while the black spots are crystals of the amphibole mineral arfvedsonite. It is primarily sourced from Chihuahua, Mexico.

Uses & Applications

Mainly used for decorative purposes, costume jewelry (beads, cabochons), carvings, and metaphysical applications such as tumbled stones.

Geological Facts

Despite being called Dalmatian Jasper, it is not actually a jasper (sedimentary) but an igneous rock. The signature spots resemble the coat of a Dalmatian dog, leading to its popular name.

Field Identification & Locations

Identify by its unique spotted pattern that does not fade or scratch off. It is commonly sold as beads in craft stores and online gem marketplaces. Collectors look for high contrast between the white background and deep black spots.

Identified on: 5/3/2026

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