Answer:
Glittering points that downward thrust. Sparkling spears that never rust.
The more of me you take, the more I appear behind you. What am I?
I dig out tiny caves and store gold and silver in them. I also build bridges of silver and make crowns of gold. Sooner or later everybody needs my help yet many people are afraid to let me help them.
Crooked as a rainbow and slick as a plate ten thousand horses can't pull me straight.
What is that you will break even when you name it?
Pirates put their booty in it.