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?
What is black when it's clean and white when it's dirty?
I am gentle enough to soothe your skin, light enough to fly in the sky, strong enough to crack rocks. What am I?
I produce wool and spit a lot
I am a tool for fairies.
Give it food and it will live, give it water and it will die.