Answer:
Glittering points that downward thrust. Sparkling spears that never rust.
I am in the middle of water but am not an island.
I can be in your body but never on your placemat. I'm always better when I'm fresh, but you'll never see me in the flesh. What am I?
I cannot be bought, cannot be sold, even if I'm sometimes made of gold. What am I?
I can go through glass without breaking it. What am I?
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?