mineral

Polished labradorite palm stone

Labradorite, a plagioclase feldspar in the labradorite–bytownite series; approximately (Ca,Na)(Al,Si)₄O₈

AI-generated identification · may be incorrect

Hardness 6–6.5 Mohs; gray-green body with a gold iridescent flash (labradorescence), vitreous luster, and triclinic crystal structure. The smooth polish obscures cleavage; specific gravity is about 2.7.

Identified October 10, 2026More mineral →

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Physical properties

Formation & geological history

Forms as calcium-rich plagioclase in slowly cooled mafic igneous rocks, where microscopic internal layers produce its color play. Labradorite-bearing rocks occur in ancient and younger igneous terrains; the specimen’s age cannot be determined from the image.

Uses & applications

Used for ornamental carvings, beads, jewelry, and collectible palm stones; rarely used as a decorative building stone.

Geological facts

Its shifting blue, green, and gold sheen is called labradorescence, caused by light interference within fine internal lamellae.

Field identification & locations

Look for a gray feldspar body showing broad, angle-dependent flashes; common sources include Labrador, Canada, Madagascar, Finland, and Norway. This polished piece appears consistent with labradorite.