The process of makin Price Rupert’s Drops is sort of like making Fried Marbles, except you don’t heat them until they’re molten. Always wear goggles or safety glasses. In making fried marbles you take pretty swirl pattern marbles, place them in a skillet or other suitable vessel and heat them to 400 - 500 degrees. Then, using a pair of tongs, drop them into ice water. The glass will instantly develop all sorts of crazy stress cracks internally in the marbles, making their translucent patterns even more interesting.
I tried frying marbles when I was a kid.
Never could get them tender................
I tried cutting a piece of tempered glass from a storm door with a tile saw once.
what a mess........................