mineral
Rainbow Moonstone
White Labradorite (Feldspar variety)
Hardness: 6-6.5 (Mohs scale), Color: White with iridescent blue/multicolor flash (labradorescence), Luster: Vitreous to pearly, Crystal structure: Triclinic
- Hardness
- 6-6
- Luster
- Vitreous to pearly, Crystal structure: Triclinic
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Physical properties
Hardness: 6-6.5 (Mohs scale), Color: White with iridescent blue/multicolor flash (labradorescence), Luster: Vitreous to pearly, Crystal structure: Triclinic
Formation & geological history
Formed in plutonic igneous rocks and metamorphic rocks; specifically, it is a variety of Labradorite that crystallizes in thin alternating layers that cause light interference.
Uses & applications
Primarily used in jewelry, as cabochons, and as a popular metaphysical or collector stone.
Geological facts
Despite its name, it is technically a variety of labradorite rather than a true moonstone (orthoclase). The play of light is called adularescence or labradorescence.
Field identification & locations
Identify by its characteristic blue or rainbow glow when tilted; commonly found in Madagascar, India, and Sri Lanka. Often carved into shapes like this crescent moon.
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Mineral
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Mineral/Rock
Granite
Granite (Phaneritic intrusive igneous rock)
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