Answer:
Two in a whole and four in a pair. And six in a trio you see. And eight's a quartet but what you must get. Is the name that fits just one of me?
Talks like this, a green wise man does. Guess my clue, you will.
My first is an insect; my second is a border; my whole puts the face in a tuneful disorder.
Bright as diamonds, Loud as thunder, Never still, A thing of wonder.
I don't have eyes, but once I did see. Once I had thoughts, but now I'm white and empty.
What is lighter than what it is made of?