sedimentary

Zebra Jasper (with Chlorite/Epidote)

Silicon Dioxide (SiO2) with inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale), Color: White and dark forest green/black, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Cleavage: None/Conchoidal

Hardness: 6

Identified July 12, 2026More sedimentary →

Explore Zebra Jasper (with Chlorite/Epidote) in the encyclopedia →

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: White and dark forest green/black, Luster: Vitreous to waxy, Crystal Structure: Trigonal (microcrystalline), Cleavage: None/Conchoidal

Formation & geological history

Formed from the deposition of silica-rich sediments where impurities or mineral inclusions like chlorite or actinolite create dark bands within a light chalcedony or quartz matrix. These are often found in metamorphic belts or rounded as river pebbles.

Uses & applications

Commonly used for lapidary work, making beads, cabochons, decorative carvings, and as a popular stone for collectors of patterns.

Geological facts

While frequently called 'Zebra Jasper', this specific specimen appears to be a stream-rounded pebble of quartz or chalcedony containing heavy green mineral inclusions, likely chlorite or epidote, giving it its distinct bi-color appearance.

Field identification & locations

Identified by its distinctive sharp contrast between translucent/white quartz and opaque dark green areas. Commonly found in riverbeds or coastal areas near metamorphic rock outcrops.