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Iridescent quality of some gems
Answer for the clue "Iridescent quality of some gems ", 10 letters:
chatoyancy
Word definitions for chatoyancy in dictionaries
Wikipedia
Word definitions in Wikipedia
In gemology , chatoyancy , or chatoyance or cat's eye effect , is an optical reflectance effect seen in certain gemstones . Coined from the French "œil de chat," meaning "cat's eye," chatoyancy arises either from the fibrous structure of a material, as ...
Wiktionary
Word definitions in Wiktionary
n. The state or condition of being chatoyant.