mineral

Rainbow Moonstone (White Labradorite)

White Labradorite (Feldspar variety, (Na,Ca)(Al,Si)4O8)

Hardness: 6-6.5; Color: White to translucent with blue/multicolored flashes (adularescence); Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Two perfect directions at nearly 90 degrees.

Hardness: 6-6
Luster: Vitreous to pearly

Identified July 3, 2026More mineral →

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Physical properties

Formation & geological history

Formed in igneous or metamorphic environments through the cooling of magma. It is part of the plagioclase feldspar group and exhibits its characteristic flash due to internal light scattering between microscopic layers of albite and orthoclase.

Uses & applications

Primarily used in jewelry as cabochons, beads, and carvings. Also highly popular as a collector's mineral and in metaphysical practices.

Geological facts

Despite its common name, 'Rainbow Moonstone' is technically a transparent variety of Labradorite feldspar rather than a true Orthoclase Moonstone. The colorful 'flash' is known as labradorescence.

Field identification & locations

Look for a milky white appearance that displays a 'blue' or 'rainbow' shimmer when tilted under light. Found globally with major deposits in India and Sri Lanka. Collectors should check for high transparency and strong color flashes.

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