dachiardite

例句：

1. 1. The gemstone is a rare and valuable mineral.
   这块宝石是稀有且有价值的矿物。
2. 2. The diamond was cut by a skilled jeweler.
   这颗钻石是由一位熟练的珠宝商切割的。
3. 3. The silica sand is used in the production of glass.
   硅砂用于玻璃的生产。