dark-colored mineral

例句：

1. 1.The dark-colored mineral is a rare gemstone that is highly sought after by collectors.
   这种深色矿物是一种稀有的宝石，被收藏家们高度追捧。
2. 2.The dark-colored mineral was discovered in the remote region of the Amazon rainforest.
   这种深色矿物是在亚马逊雨林的偏远地区被发现的。
3. 3. The dark-colored mineral has been used for centuries as a medicinal and ornamental material.
   这种深色矿物自古以来就作为药用和装饰材料使用。