Moonstone

//ˈmunˌstoʊn// noun

Definitions

Noun
  1. 1
    A translucent gemstone, an orthoclase feldspar, that has a pearly lustre. countable, uncountable

    "To give light to the presence chamber were seven escarbuncles, great as pumpkins, hung in order down the length of it, and nine fair moonstones standing in order on silver pedestals between the pillars on the dais."

  2. 2
    a transparent or translucent gemstone with a pearly luster; some specimens are orthoclase feldspar and others are plagioclase feldspar wordnet

Etymology

From moon + stone.

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