Answer:
I am a precious stone, as clear as a diamond. Though you can walk on water with my power, try to keep me, and I'll vanish in an hour. What am I?
I am a lunch money thief
What is so delicate that saying its name breaks it?
You have to travel far before you turn it over. What is it?
I am bought by the yard but worn by the foot. What am I?
No matter how little or how much you use me, you change me every month.