mineral

Labradorite (Raw)

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

Hardness: 6-6.5 Mohs, Color: Dark grey to grey-green (base) with potential labradorescence, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect in two directions

Hardness: 6-6

Identified July 8, 2026More mineral →

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Physical properties

Hardness: 6-6.5 Mohs, Color: Dark grey to grey-green (base) with potential labradorescence, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect in two directions

Formation & geological history

Formed in mafic igneous rocks such as basalt and gabbro through the crystallization of cooling magma. It is a calcium-enriched feldspar mineral.

Uses & applications

Used primarily as a decorative stone in jewelry (when polished), architectural surfacing, and as a popular specimen for crystal collectors.

Geological facts

Named after the Labrador peninsula in Canada where it was discovered in 1770. It is famous for it magic-like play of colors called labradorescence caused by internal light reflections.

Field identification & locations

Identify in the field by its dark grey base color and rotating it under light to check for blue, green, or gold flashes. Commonly found in Canada, Madagascar, Norway, and Finland.