Answer:
Bright as diamonds, Loud as thunder, Never still, A thing of wonder.
It is an arctic double breasted formal wear.
It holds no blessings in disguise. Its rhymes are aimed at your demise, it's cast only to ruin, Whatever you are doin'.
In the night a mountain, in the morning a meadow.
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.
What covers its face with its hands, speaks no language, yet most known what it's saying?