How do I know if my moonstone is real?
John Hall
Updated on May 24, 2026
Moonstones are known for their adularescence – a unique optical illusion that results in a milky, bluish luster or glow on the surface of the gem. To test this aspect of the jewel, place it under bright artificial light and view it from above. If you notice the blue/white glow, your moonstone is probably real.