mineral

Hypersthene

Enstatite (Hypersthene variety), (Mg,Fe)SiO3

Hardness: 5.5-6 (Mohs scale); Color: Black to dark brownish-green with metallic sheen; Luster: Pearly to sub-metallic; Crystal structure: Orthorhombic; Cleavage: Good; Specific gravity: 3.4-3.9

Hardness: 5
Color: Black to dark brownish-green with metallic sheen
Luster: Pearly to sub-metallic

Identified April 10, 2026More mineral →

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Physical properties

Hardness: 5.5-6 (Mohs scale); Color: Black to dark brownish-green with metallic sheen; Luster: Pearly to sub-metallic; Crystal structure: Orthorhombic; Cleavage: Good; Specific gravity: 3.4-3.9

Formation & geological history

Formed in igneous and metamorphic rocks, particularly in basic and ultrabasic rocks like gabbro and norite. It is often found in high-pressure, high-temperature environments.

Uses & applications

Primarily used as a gemstone for jewelry (cabochons and beads) and as a collector's specimen. Known in metaphysical circles as a 'stone of rest'.

Geological facts

Hypersthene is often referred to as 'velvet labradorite' because of its unique schiller effect (labradorescence), which creates a cat's-eye or velvety sheen when rotated in light.

Field identification & locations

Identify by its characteristic 'shimmer' or labradorescence on a dark base. Commonly found in Canada (Paul's Island, Labrador), USA, Norway, and Greenland. Collectors look for a strong, uniform sheen.

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