sedimentary

Polychrome Jasper (Desert Jasper)

Silicon Dioxide (SiO2) with iron and mineral inclusions

AI-generated identification · may be incorrect

Hardness: 6.5-7 (Mohs scale); Color: Swirls of red, brown, tan, grey, and teal; Luster: Vitreous to waxy (when polished); Crystal Structure: Hexagonal (Microcrystalline); Cleavage: None/Conchoidal fracture; Specific Gravity: 2.58-2.91

Hardness: 6
Color: Swirls of red, brown, tan, grey, and teal
Luster: Vitreous to waxy (when polished)

Identified March 18, 2026More sedimentary →

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Physical properties

Formation & geological history

Formed through the infiltration of silica-rich fluids into volcanic ash or fine sediment, followed by slow cooling and pressure. These specimens typically originate from the Cretaceous period (approx. 66-145 million years ago) in the Norcross area of Madagascar.

Uses & applications

Primarily used as a lapidary material for decorative carvings, palm stones, jewelry cabochons, and as a metaphysical/collector's stone.

Geological facts

Discovered relatively recently (around 2006) during a search for new deposits of Ocean Jasper in Madagascar. It is known for its unique 'landscape' patterns that look like desert paintings.

Field identification & locations

Identify in the field by its opaque, multi-colored circular or wavy patterns and high hardness that cannot be scratched by a steel pocket knife. Found almost exclusively in Madagascar. For collectors, look for high color contrast and absence of cracks.