sedimentary

Leopard Skin Jasper

Silicon Dioxide (SiO2) with iron and manganese inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale), Color: pinkish-brown with orbicular or spotted patterns of dark brown and tan, Luster: dull to vitreous, Crystal structure: microcrystalline trigonal

Hardness: 6

Identified July 18, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: pinkish-brown with orbicular or spotted patterns of dark brown and tan, Luster: dull to vitreous, Crystal structure: microcrystalline trigonal

Formation & geological history

Formed through the accumulation of volcanic ash or silicate sediments that were later silicified. The distinctive spotting (orbicular patterns) is caused by the localized diffusion of mineral impurities during the hardening process.

Uses & applications

Primarily used for lapidary work, jewelry making (cabochons and beads), decorative carvings, and as a popular specimen for metaphysical collectors.

Geological facts

Despite being called a jasper, it is often technically an orbicular rhyolite. It is famously associated with the 'jaguar' or 'leopard' because of its visual resemblance to spotted wild cats.

Field identification & locations

Identify by its characteristic 'spotted' or blotchy pattern against a tan or reddish-brown base. It is frequently found in Mexico and Peru. Collectors look for high contrast in the spots and a smooth, waxy surface when polished.