Gem and mineral hardness is measured on the Mohs scale. The numbers are based on the relative ease or difficulty with which one mineral can be scratched by another. But the Mohs scale is deceptive. The steps between the minerals are not evenly spaced. For example, diamond is only one number away, but it’s many times harder than gems in the corundum family.
Moonstone falls between 6 and 6.5 on the Mohs scale. It also has poor toughness.
See Also
Rainbow Moonstone MeaningMoonstone and Astrology: Benefits and Correct Way of WearingMoonstone Healing Properties | Moonstone Meaning | Benefits Of Moonstone | Metaphysical Properties Of Moonstone | Charms Of Light - HealingMoonstone meaning and jewelry : complete guideMoonstone ranks 6 to 6.5 on the Mohs scale.
See Also
Moonstone Meaning – Moon Magic
Due to a property called cleavage, a hard blow can break a moonstone.
StabilityHigh heat or sudden temperature change can cause breaks in moonstone. It is stable to light but is harmed by exposure to hydrofluoric acid.
Cleaning
Warm soapy water is the only recommended substance for cleaning moonstones. Ultrasonic and steam cleaners are never recommended.
