光玉髓

例句：

1. 1. The gemstone was polished to a shine that reflected the light.
   这颗宝石被打磨得闪闪发光，反射出光线。
2. 2. This pearl is said to be one of the rarest and most valuable in the world.
   据说这是世界上最稀有和最有价值的珍珠之一。
3. 3. The mother pearl, which is the largest pearl ever found, is now on display in a museum.
   最大的珍珠——母珍珠，现在陈列在博物馆里。