Answer:
Left to right Iām quite bright. Right to left I might bite.
Lovely and round, I shine with pale light, grown in the darkness, a lady's delight.
Bright as diamonds, Loud as thunder, Never still, A thing of wonder.
I am a precious little thing, dancing and eating all the time. Watch me from a distance, so you can feel my warm and gentle love. But don't come to close or my next meal you could be!
When set loose I fly away. Never so cursed as when I go astray.
Iām grown from darkness but shine with a pale light. Very round I am and always a lady's delight.