Answer:
Thousands lay up gold within this house. But no man made it. Spears past counting guard this house, but no man wards it.
Walk on the living, they don't even mumble. Walk on the dead, they mutter and grumble.
There are two meanings to me. With one I may need to be broken, with the other I hold on. My favorite characteristic is my charming dimple.
It flies when it's on and floats coming off.
We are all around, yet to us you are half blind. Sunlight makes us invisible, and difficult to find
Break me and I am better immediately set and harder to be broken again.