igneous

Dalmatian jasper (Dalmatian stone)

Commercially called Dalmatian jasper; typically a feldspar-rich rock with dark arfvedsonite or tourmaline-group inclusions, rather than true jasper

AI-generated identification · may be incorrect

Cream to pale-yellow, opaque, with distinctive black spots; usually fine-grained and polished, Mohs hardness about 6–7. Mineral mix and exact hardness vary by specimen.

Identified October 15, 2026More igneous →

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At a glance

Common name: Dalmatian jasper (Dalmatian stone)
Scientific name: Commercially called Dalmatian jasper; typically a feldspar-rich rock with dark arfvedsonite or tourmaline-group inclusions, rather than true jasper
Category: igneous
Identified: October 15, 2026
Method: Standard

AI Estimated Value

About $2–$10 for small tumbled pieces; larger polished specimens or jewelry typically $10–$50.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Cream to pale-yellow, opaque, with distinctive black spots; usually fine-grained and polished, Mohs hardness about 6–7. Mineral mix and exact hardness vary by specimen.

Formation & geological history

A feldspar-rich igneous rock formed as magma cooled; black minerals crystallized within the lighter matrix. Material sold as Dalmatian stone is commonly quarried in Chihuahua, Mexico; precise age depends on the deposit.

Uses & applications

Used for tumbled stones, beads, cabochons, ornaments, and small decorative objects.

Geological facts

Despite its trade name, it is generally not jasper, which is a variety of microcrystalline quartz.

Field identification & locations

Recognize it by its cream-colored base and irregular black spots; it is denser and harder than ceramic imitations. Similar-looking spotted stones can have different mineral compositions.