sedimentary

Zebra Jasper

Impure variety of Silica (SiO2)

Hardness: 6.5-7 (Mohs scale), Color: Creamy white with brown/pinkish stripes, Luster: Vitreous to dull, Crystal Structure: Trigonal (Microcrystalline), Specific Gravity: 2.6-2.9

Hardness: 6

Identified June 21, 2026More sedimentary →

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: Creamy white with brown/pinkish stripes, Luster: Vitreous to dull, Crystal Structure: Trigonal (Microcrystalline), Specific Gravity: 2.6-2.9

Formation & geological history

Formed primarily from the deposition of silica-rich fluids in volcanic rocks or sedimentary environments. The distinctive stripes are caused by alternating layers of minerals like iron oxides or manganese during the hardening process.

Uses & applications

Primarily used for ornamental purposes, including beads for jewelry, tumbled stones for collectors, meditation tools, and decorative carvings.

Geological facts

Despite its name, Zebra Jasper is often technically a siltstone or an opaque form of chalcedony rather than a true jasper. It has been used for millennia by various cultures for its unique patterns.

Field identification & locations

Identify by its characteristic banded or 'zebra' striped pattern and its ability to scratch glass (hardness test). Commonly found in Australia, Africa, and Brazil. Collectors look for sharp contrast in the bands.