Crossword clues for the word: MOONSTONES The word MOONSTONES has appeared as an answer to at least 5 crossword clues on different crossword puzzles. Crossword clues for MOONSTONES Showing 1 to 5 of 5 results Clue(s) Astronauts' finds Certain Armstrong collections Gems with a silvery play of color Opalescent gems popular in Art Nouveau Pearly rocks used in jewelry