Answer:
How many bricks does it take to complete a building made of brick?
What’s full of holes but still holds water?
Lovely and round, I shine with pale light, Grown in the darkness, a lady’s delight.
It comes from crystal and melts to a treat. Add it to your tea to make it sweet. What is it?
Your reflection can be seen here, as long as you’re not moving.
It is something you will never see again.