tanzanite

例句：

1. 1.This tanzanite necklace is a symbol of love and beauty.
   这条坦桑石项链是爱情和美丽的象征。
2. 2. The tanzanite mines are located in the heart of Africa.
   坦桑石矿位于非洲的中心地带。
3. 3. The tanzanite gemstone has been prized for its unique color and clarity.
   坦桑石宝石因其独特的颜色和透明度而受到珍视。