Answer:
Though blind as well, can lead the blind well.
Die without me, never thank me. Walk right through me, never feel me. Always watching, never speaking. Always lurking, never seen.
A precious stone, as clear as diamond. Seek it out while the sun's near the horizon. Though you can walk on water with its power, try to keep it, and it'll vanish in an hour.
It has no top or bottom, but it can hold flesh, bones, and blood all at the same time.
A precious fluid, thicker than water.
They are many and one, they wave and they drum, Used to cover a state, they go with you everywhere.