mineral

Polished Ocean Jasper

Orbicular Jasper (variety of Chalcedony/Quartz, SiO2)

Hardness: 6.5-7 (Mohs scale), Color: Multicolored (green, brown, blue, white), Luster: Vitreous to waxy when polished, Crystal Structure: Trigonal (microcrystalline), Cleavage: None (conchoidal fracture), Specific Gravity: 2.6-2.65

Hardness: 6

Identified April 29, 2026More mineral →

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Physical properties

Formation & geological history

Formed as a rhyolite flow or tuff that has been silicified over time. It is a secondary mineral that fills cavities or veins in volcanic rocks. This specific material is found primarily in Madagascar along the shoreline.

Uses & applications

Primarily used as an ornamental stone, for lapidary work, jewelry (cabochons), and metaphysical/collector specimens.

Geological facts

Ocean Jasper is only found on the coast of Madagascar and can only be mined at low tide. This specific piece has been carved and polished into a decorative flame or wave shape.

Field identification & locations

Identify in the field by its distinct orbicular (eye-like) patterns and varied colors. It is often non-transparent. Collectors look for high color contrast and well-defined 'orbs'.

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mineral