moonstone: Meaning and Definition of
Pronunciation: (mn'stōn"), [key]
- Also calleda semitransparent or translucent, opalescent, pearly-blue variety of adularia, used as a gem.
- any of several adularescent feldspars, as certain varieties of albite, labradorite, or oligoclase, used as gems.
- (not used technically) any milky or girasol stone used as a gem.
- moonstone (Thesaurus)