Thanks for the comments.
The glass is melted with a high temp. torch rather than an oven. I think it is around 2000 deg. Different glass takes different temps. to become molten. It is almost as addictive as casting but, with a little more control.
I'm not sure what a troll bracelet is but, the hole can be made any size. These beads are the size of a large blueberry and can also be made any size.
As for selling them, I haven't sold any. I started making them for my wife, she uses them for jewelry, keychains, and some other things. But if you are interested, PM me and we'll go from there.