Definition: a hard, valuable substance that is often used in jewellery Level: B1
她的订婚戒指镶有一颗璀璨的宝石。
Her engagement ring features a single brilliant ___stone.
这条项链上镶嵌着各种不同颜色的宝石。
The necklace was set with various coloured ___stones.
他正在学习如何鉴定贵重宝石的价值。
He's studying to learn how to value precious ___stones.
