lol Stacy... there are several ways to make adventurine smaller that the chucks it comes in.
1) mortar and pestle grinding
2) heat it up in an oven at the highest temperature then let it soak for an hour, then drop it in ice cold water
3) mechanically hit it with a hammer in some type of containment box
4) get it hot at the torch then on a metal punty pull it into hair like stringers
5) encase it in clear, then pull stringers
I've tried all 5 ways and like the m & p the best.