man-made diamond

例句：

1. 1.The man-made diamond is the most valuable gemstone in the world.
   这种人造钻石是世界上最珍贵的宝石。
2. 2. She wore a man-made diamond ring on her finger.
   她戴着一枚人造钻石戒指在手指上。
3. 3. The man-made diamond was so expensive that it was only worn by the rich.
   这种人造钻石非常昂贵，只有富人才能佩戴。