Found 2 items, similar to Moonstone.
English → English (WordNet) Definition: moonstone moonstone n : a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar
English → English (gcide) Definition: Moonstone Moonstone \Moon"stone`\ (m[=oo]n"st[=o]n`), n. (Min.) A nearly pellucid variety of feldspar, showing pearly or opaline reflections from within. It is used as a gem. The best specimens come from Ceylon. [1913 Webster]