Answer:
Put into a pit, locked beneath a grate, guarded through the night, yet it still goes out.
Not born, but from a Mother's body drawn. I hang until half of me is gone. I sleep in a cave until I grow old. Then valued for my hardened gold.
If you have it, you want to share it. If you share it, you don't have it.
Where humans breath liquid?
The more holes you cover the lower it goes.
I can only be played on a windy day