Opals come in diffrent sizes of colors and they range from opague to transparnt the most desirableopals are known as the precious opals they have a special inridescent quality as you moce the opal under light is show a spectrum of colors. Which words provied the bst context clue for the meaning of iridescent
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The word "spectrum of colors" provides the best context clue for the meaning of iridescent.
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