sedimentary

Leopard Skin Jasper

Silicon Dioxide (SiO2) with various inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs); Color: Tan and brown with dark green or black 'leopard' spots/streaks; Luster: Dull/Waxy; Structure: Microcrystalline quartz; Cleavage: None

Hardness: 6
Luster: Dull/Waxy

Identified March 26, 2026More sedimentary →

Explore Leopard Skin Jasper in the encyclopedia →

Identify your own rocks.

Get a report just like this from any photo, free.

App Store Google Play

Physical properties

Hardness: 6.5-7 (Mohs); Color: Tan and brown with dark green or black 'leopard' spots/streaks; Luster: Dull/Waxy; Structure: Microcrystalline quartz; Cleavage: None

Formation & geological history

Formed from the deposition of microcrystalline quartz as mineral-rich fluids permeated cracks in volcanic rocks or sedimentary beds. The patterns result from chemical precipitation during the solidification process.

Uses & applications

Commonly used for lapidary work, jewelry (cabochons and beads), decorative ornaments, and as a popular stone for balancing and grounding in holistic practices.

Geological facts

Despite being called 'jasper', this specific specimen (often called Orbicular Jasper) is technically an igneous rhyolite that has been heavily silicified, giving it the appearance and hardness of jasper.

Field identification & locations

Identify in the field by its distinct spotted or 'orbicular' pattern and high hardness (it will scratch glass). Commonly found in Mexico, Peru, and parts of Brazil. Smooth, water-worn pebbles are often found in riverbeds.