Answer:
What five-letter word becomes shorter when you add two more letters?
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
What has a spot and is very bright, is sometimes, red, white, blue, yellow or green and is often blinding.
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.
I have one, you have one. If you remove the first letter, a bit remains. If you remove the second, bit still remains. If you remove the third, it still remains.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?