mineral

Labradorite (Polished Sphere)

(Ca, Na)(Al, Si)4O8 (Silicate mineral)

AI-generated identification · may be incorrect

Hardness: 6-6.5 on Mohs scale; Color: Gray-green to dark gray with internal iridescence; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Two directions at nearly 90 degrees.

Hardness: 6-6
Color: Gray-green to dark gray with internal iridescence
Luster: Vitreous to pearly

Identified July 19, 2026More mineral →

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Physical properties

Hardness: 6-6.5 on Mohs scale; Color: Gray-green to dark gray with internal iridescence; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Two directions at nearly 90 degrees.

Formation & geological history

Forms in mafic igneous rocks such as basalt and gabbro; also found in anorthosites. It is created through the cooling and crystallization of magma deep within the Earth's crust.

Uses & applications

Primarily used in jewelry making, ornamental carvings, high-end countertops, and for spiritual/metaphysical collecting purposes.

Geological facts

Labradorite displays a unique optical phenomenon known as labradorescence, which is caused by light reflecting off microscopically thin layers of different minerals within the stone.

Field identification & locations

Can be identified by its dark base color combined with blue, green, or gold flashes of light when tilted. It is most famously found in Labrador, Canada, and Madagascar.