mineral

Ocean Jasper Mushroom

Orbicular Jasper (Silicon Dioxide, SiO2 mixed with various impurities)

Hardness: 6.5-7 (Mohs scale), Color: Multicolored green, grey, and brown with orbicular patterns, Luster: Vitreous to dull, Crystal structure: Hexagonal (microcrystalline/cryptocrystalline), Cleavage: None, Specific gravity: 2.6-2.9

Hardness: 6

Identified May 7, 2026More mineral →

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Physical properties

Formation & geological history

Formed through the precipitation of silica in volcanic flows or fissures. The distinct orbs are a result of spherulitic growth of quartz and feldspar. Usually found in ancient volcanic deposits (Cretaceous period).

Uses & applications

Primarily used as a decorative material, in lapidary work for carvings (such as this mushroom shape), jewelry such as cabochons, and as a popular specimen for crystal healing and mineral collectors.

Geological facts

True Ocean Jasper is only found along the coast of Madagascar. It can only be mined during low tide, making it increasingly rare as original deposits have been largely exhausted.

Field identification & locations

Identify in the field by its unique 'eyes' or orb-like patterns and its hardness (it will not be scratched by a steel blade). This specific piece is a man-made carving of natural stone, which is a common way this material is sold.

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