Answer:
A large oasis in the desert. Come with cash and leave with none. What am I?
Of these things - I have two. One for me - and one for you. And when you ask about the price I simply smile and nod twice.
It's in your hand though you can not feel it. Only you and time can reveal it.
I'm white and used for cutting and grinding. When I'm damaged, humans usually remove or fill me. For most animals I am a useful tool. What am I?
What is so delicate that saying its name breaks it?
The answer I give is yes, but what I mean is no. What was the question?