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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Opalescent gems:

MOONSTONES: Opalescent gems
CATSEYES: Opalescent gems.
MOONSTONE: Opalescent gem
MOONSTONES: Opalescent gems popular in Art Nouveau
CATSEYE: Gem with opalescent reflections from within.