mineral

Labradorite

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

AI-generated identification · may be incorrect

Hardness: 6-6.5 on Mohs scale. Color: Gray-green, dark gray, brown, or colorless with iridescent flashes of blue, green, gold, and orange (labradorescence). Luster: Vitreous to pearly. Crystal structure: Triclinic. Specific gravity: 2.68-2.72.

Hardness: 6-6
Luster: Vitreous to pearly

Identified August 2, 2026More mineral →

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Physical properties

Formation & geological history

Forms in mafic igneous rocks such as basalt and gabbro, as well as anorthosite and metamorphic rocks through slow cooling of magma.

Uses & applications

Widely used in jewelry, ornamental objects, and as a gemstone due to its striking optical phenomenon (labradorescence).

Geological facts

Labradorite was first discovered in Labrador, Canada, in 1770. According to Inuit folklore, the Northern Lights were trapped inside the rocks along the coast of Labrador until a brave warrior freed most of them with a spear strike.

Field identification & locations

Easily identified by its dark base color and characteristic flash of vibrant iridescent colors when rotated in the light. Commonly sourced from Canada, Madagascar, Finland, Australia, and Russia.