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• a  consisting of or resembling mother-of-pearl
• s  having a play of lustrous rainbow colors
  nacreous (or pearlescent) clouds looking like mother-of-pearl

• Boschesque crustaceans of his hermetic imagination to caress the tentacular algae of his subaqueous and electrified impudicity or the nacreous and colubrine doves of a .
• The story itself has the nacreous quality of an old memory; the narrator, a biology teacher in a declining New England mill town, recalls his affair with a California woman who is .
• The massive, gleaming support pillars are nacreous limestone, accreted from natural seawater through an industrial version of the same process that creates coral reefs.

• iridescent
• opalescent
• opaline
• pearlescent