mineral

Ocean Jasper

Orbicular Jasper (SiO2)

Hardness: 6.5-7 (Mohs scale), Color: Variegated greens, creams, and grays with orbicular patterns, Luster: Vitreous to waxy, Crystal Structure: Hexagonal/Trigonal (microcrystalline)

Hardness: 6

Identified May 5, 2026More mineral →

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Physical properties

Hardness: 6.5-7 (Mohs scale), Color: Variegated greens, creams, and grays with orbicular patterns, Luster: Vitreous to waxy, Crystal Structure: Hexagonal/Trigonal (microcrystalline)

Formation & geological history

Forms as a rhyolitic igneous rock or through hydrothermal activity where silica-rich fluids precipitate in cavities. The unique orbicular (circular) patterns are formed through the growth of radial needle-like crystals of quartz and feldspar.

Uses & applications

Primarily used for lapidary work, decorative carvings (like the mushroom shape shown), jewelry, and by collectors of metaphysical stones.

Geological facts

True Ocean Jasper is only found on the coast of Madagascar and can only be mined during low tide. It was officially rediscovered in 1999 after being lost for decades.

Field identification & locations

Identify by its distinctive 'eye' or 'circle' patterns and diverse colors. For collectors, look for high color contrast and well-defined orbicular spheres. Commonly found in Madagascar.