Answer:
I am seen in the water. If seen in the sky, I am in the rainbow, a jay's feather, and lapis lazuli.
What has to be broken before it can be used?
Plant whose name sounds like a dish full of dairy spread.
It is by nature, soft as silk; A puffy cloud, white as milk; Snow tops this tropical crop; The dirtiest part of a mop
Face with a tree, skin like the sea. A great beast I am. Yet vermin frightens me.
I'm the source of all emotion but I'm caged in a white prison.