Answer:
I'm not man's best friend, I'm their enemy, I can mark your end, yet you do not see me, I am very small, but very tough, If you have me, then you have it rough.
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.
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground. It holds pale gems of blue.
You heart it speak, for it has a hard tongue. But it cannot breathe, for it has not a lung.
I usually wear a yellow coat. I usually have a dark head. I make marks wherever I go.
Within, I clean all that is bad and is old. I make juice thatβs the color of gold. Should I die, a filter machine would you need assembled to replace me and beans I resemble.