Answer:
I can be quick and then I'm deadly, I am a rock, shell and bone medley. If I was made into a man, I'd make people dream, I gather in my millions By ocean, sea and stream.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
The man who made it didn't need it. The man who bought it didn't use it. The man who used it didn't want it.
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground. It holds pale gems of blue.
He stands beside the road. In a purple cap at tattered green cloak. Those who touch him, curse him.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?