opalescent

/ˌoʊpəˈlɛsənt/
adjective
  1. Showing many colors that shift and change like an opal; having a milky, rainbow-like shimmer.
    • The sky turned opalescent at sunset, blending gold, purple, and soft green.
    • The opalescent glass vase glowed with pink and blue hues in the sunlight.
    • Her dress had an opalescent sheen that reminded me of a pearl.
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