mineral

Ocean Jasper

Spherulitic Chalcedony (SiO2)

Hardness: 6.5-7 on Mohs scale; Color: Multi-colored bands with circular 'orb' patterns; Luster: Vitreous to waxy; Crystal structure: Trigonal/Microcrystalline; Cleavage: None; Specific gravity: 2.6-2.65

Hardness: 6
Color: Multi-colored bands with circular 'orb' patterns
Luster: Vitreous to waxy

Identified May 10, 2026More mineral →

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Physical properties

Formation & geological history

Formed as a result of rhythmic precipitation of silica around a nucleus in volcanic environments, specifically within cavities of rhyolite. Most authentic specimens date to the Tertiary period.

Uses & applications

Primarily used for ornamental jewelry, lapidary art, and as a popular collector specimen in the metaphysical community.

Geological facts

Ocean Jasper is only found on the coast of Madagascar and can only be mined during low tide. The original vein was discovered in the late 1990s but has since been largely exhausted.

Field identification & locations

Identified by its distinctive 'orbicular' or circular patterns and varied color bands in a single stone. Look for smooth, waxy surfaces and quartz-rich pockets. Commonly found in Northwest Madagascar.