Answer:
who do you think you know but sometimes you don't
More precious than gold, but cannot be bought, Can never be sold, only earned if itβs sought, If it is broken it can still be mended, At birth it canβt start nor by death is it ended.
It's in your hand though you can not feel it. Only you and time can reveal it.
Only two backbones and thousands of ribs.
What five-letter word becomes shorter when you add two more letters?
Iβm grown from darkness but shine with a pale light. Very round I am and always a lady's delight.