红晶石

例句：

1. 1. The emerald is the most valuable gemstone inthe world.
   翡翠是世界上最珍贵的宝石。
2. 2. The diamondis a symbol of love and beauty.
   钻石是爱情和美丽的象征。
3. 3. Theruby is known forits bright red color.
   红宝石以其鲜艳的红色而闻名。