sintered spinel

例句：

1. 1.The mineral is used in jewelry making due to its high hardness and durability.
   由于其高硬度和耐用性，这种矿物被用于珠宝制作。
2. 2. The sintered spinel is a popular material for decorative purposes.
   烧结尖晶石是一种受欢迎的装饰材料。
3. 3. The sintered spinel is often used as an alternative to traditional gemstones.
   烧结尖晶石经常被用作传统宝石的替代品。