What is the stuff called that you sometimes see inside of glass bowls, used for decoration?

Question

its like a gel

Answer 1

popery or glass pebbles or marbles.

Answer 2

Maybe you're thinking of confetti? or rafetta?

They are both used in centerpieces for decorations!

Answer 3

I believe you are referring to frit.  A local glass manufacturer throws it in the glass and it swirls, or stays small like confetti!

Hope this helps,

Elena