sedimentary

Leopard Skin Jasper

Orbicular Jasper (Silicon Dioxide, SiO2)

AI-generated identification · may be incorrect

Hardness: 6.5-7. Color: Tan to cream with brown or reddish spotted patterns. Luster: Vitreous to dull. Structure: Microcrystalline. Cleavage: None (conchoidal fracture).

Hardness: 6
Color: Tan to cream with brown or reddish spotted patterns
Luster: Vitreous to dull

Identified July 2, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7. Color: Tan to cream with brown or reddish spotted patterns. Luster: Vitreous to dull. Structure: Microcrystalline. Cleavage: None (conchoidal fracture).

Formation & geological history

Formed via the deposition of silica-rich fluids (often in volcanic or sedimentary environments) where mineral impurities like iron or manganese create orbicular or spotted patterns during cooling or cementation.

Uses & applications

Primarily used for lapidary work, jewelry (cabochons and beads), carvings, and as a popular stone for crystal healing and mineral collecting.

Geological facts

Despite being called 'Jasper', it is technically a form of Rhyolite (an igneous rock) or a silicified sedimentary rock depending on the specific deposit. The spots are known as 'orbicules'.

Field identification & locations

Identified by its distinctive leopard-like spots and hardness. Commonly found in Mexico (specifically Chihuahua) and Brazil. To identify in the field, look for high hardness and non-transparent, spotted patterns.