Answer:
What is so fragile that saying its name breaks it?
I am taken from a mine and shut in a wooden case from which I am never released. Yet I am used by almost everybody. What am I?
With a halo of water and a tongue of wood; stone as skin long I stood.
I cannot be bought, cannot be sold, even if I'm sometimes made of gold. What am I?
I am the kind of nut that is empty at the center and has no shell.
Runs over fields and woods all day. Under the bed at night sits not alone, With long tongue hanging out, Resting at your feet until we go for a walk