sylvialite

例句：

1. 1. The sylvialite is a rare and valuable gemstone.
   西尔维亚利特是一种稀有且珍贵的宝石。
2. 2. The sylvialite has been used in ancient jewelry for centuries.
   西尔维亚利特在古代珠宝中被使用了几个世纪。
3. 3. The sylvialite was discovered in the Amazon rainforest, where it is still mined today.
   西尔维亚利特是在亚马逊雨林中发现的，至今仍在那里开采。