This is actually a whale bone from Australia that in fact has been opalized.

这实际上是一块来自澳大利亚的鲸鱼骨头，已经被加工过了。

So this is actually a whale bone from Australia that in fact has been opalized.

这是一块来自澳大利亚的鲸鱼骨头，已经被加工过了。