Rainbow Moonstone look-alikes
Moonstone (variety of Orthoclase Feldspar)
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Open the appSeveral rocks and minerals can be confused with Rainbow Moonstone. Below are documented look-alikes and the features that tell them apart. Never rely on a single feature. Always check multiple properties.
Similar rocks to compare
Moonstone (Orthoclase)
Orthoclase (KAlSi3O8)
Also known as: Adularia, Hecatolite
Labradorite
Labradorite ((Ca,Na)(Al,Si)AlSi2O8)
Also known as: Spectrolite (a high-quality variety)
Opal
Opal (SiO2·nH2O)
Also known as: Precious Opal, Common Opal
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