gemstone

Rainbow Moonstone (White Labradorite)

Labradorite (White varieties with Schiller effect), (Na,Ca)(Al,Si)4O8

AI-generated identification · may be incorrect

Hardness: 6-6.5 Mohs, Color: White or transparent with blue/multicolored adularescence, Luster: Vitreous to pearly, Crystal Structure: Triclinic, Cleavage: Perfect in two directions

Hardness: 6-6

Identified July 21, 2026More gemstone →

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Physical properties

Hardness: 6-6.5 Mohs, Color: White or transparent with blue/multicolored adularescence, Luster: Vitreous to pearly, Crystal Structure: Triclinic, Cleavage: Perfect in two directions

Formation & geological history

Formed in igneous and metamorphic rocks under specific cooling conditions that allow for exsolution lamellae, creating the light-interfering layers responsible for its sheen. Found in pegmatites and metamorphic terrains.

Uses & applications

Primarily used in jewelry (cabochons, beads), spiritual healing practices, and as a collector's gemstone.

Geological facts

Despite its name, it is technically a variety of Labradorite rather than a true Orthoclase Moonstone. The colorful 'flash' it displays is known as labradorescence or adularescence.

Field identification & locations

Identify by rotating the stone under light to see a blue or rainbow flash. Often contains black tourmaline (schorl) inclusions, as seen in this specimen. Commonly found in India, Sri Lanka, and Madagascar.