Answer:
I am a precious stone as clear as diamond. Seek me out while the sun's near the horizon. Though you can walk on water with my power try to keep me and I'll vanish in an hour.
I have two body parts but am used to measure length. What am I?
I march before armies a thousand salute me. My fall can bring victory but no one would shoot me. The wind is my lover one-legged am I. Name me and see me at home in the sky.
I am needed for most animals and hardcover books. What am I?
In Paris but not in France the thinnest of its siblings.
Give it food and it will live, give it water and it will die.