gemstone

n.宝石 复数：gemstones 柯林斯词典 宝石A gemstone is a jewel or stone used in jewellery. 双语例句 The gemstone is 28.6 millimetres high and weighs 139.43 carats. 这块宝石高28.6毫米，重139.43克拉。 The pleasure you derive from...