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Defenition of the word opal

    • Defenition of the word opal

      • A mineraloid gel which is deposited at a relatively low temperature and may occur in the fissures of almost any kind of rock, being most commonly found with limonite, sandstone, rhyolite, marl and basalt. (source: Wikipedia)
      • a translucent mineral consisting of hydrated silica of variable color; some varieties are used as gemstones

    Hyponyms for the word opal

      • black opal
      • fire opal
      • girasol
      • harlequin opal

    Hypernyms for the word opal

      • mineral
      • opaque gem

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