Answer:
I am seen in the water. If seen in the sky, I am in the rainbow, a jay's feather, and lapis lazuli.
I cannot be felt, seen or touched. Yet I can be found in everybody. My existence is always in debate. Yet I have my own style of music.
The ones who see it may go blind, Contracting the fool's madness. You have to dig to find it, Crush big stones or mine it. Wash dirt clumps in a pan and wait for it to settle, A shiny, precious metal.
Useful tool for who in darkness dwell. Within you, corrupting like a deadly spell.
Who is it that rows quickly with four oars, but never comes out from under his own roof?
Why did Superman flush the toilet?