Andesine is a silicate mineral, a member of the plagioclase feldspar group. The Mohs scale 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. Andesine ranks 6 to 6.5 on the Mohs scale. Its toughness is considered Fair.
Care & Cleaning
Warm, soapy water is the best method for cleaning andesine. The use of ultrasonic and steam cleaners is not recommended.