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opal /ˌɒn ˈslaʃ ˈɒf ˈslaʃ ˈtɛst ˈbʌtən/ n

中文：蛋白石

中文 · 蛋白石Español · ópaloFrançais · opale
Meaning：Soft opaque stone that is milky-white or quite dark and gives off rainbowlike reflections.
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Semi-precious stones

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