precious stone

noun
🔊/ˌpreʃəs ˈstəʊn/
🔊/ˌpreʃəs ˈstəʊn/
(also stone)
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  1. a rare valuable stone, such as a diamond, that is used in jewellery宝石
    • a ring set with a precious stone镶有宝石的戒指
    see also semi-preciousTopics Clothes and Fashionb2