cryptolith

例句：

1. 1. The ancientcity of Petra is famous for its hidden gems, including the cryptoliths.
   佩特拉古城以其隐藏的宝石而闻名，包括隐晶石。
2. 2.These cryptoliths have been found in various parts of the world, with some dating back thousands of years.
   这些隐晶石在世界不同地区都有发现，有些可以追溯到数千年前。
3. 3.The cryptoliths are highly prized by collectors and are often used as decorative elements in jewelry.
   隐晶石被收藏家们高度珍视，常作为珠宝装饰元素使用。