Answer:
Marking mortal privation when firmly in place. An enduring summation inscribed in my face.
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?
With three eyes and as black as night I frequently knock down ten men with a single strike!
I am the thing that is used to make your weight. What am I?
Whoever made me doesn't want me. Whoever bought me doesn't need me. Whoever uses me doesn't know me. What am I?
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.