u/baphommite

I got a bracelet off Etsy recently, and it's so cute! Unfortunately, it's just a bit too small. I'd like to try taking a crack at adding a few beads myself to make it the right size, but I'm not certain what the right type of thread would be to use. I'm going to try getting some Fireline elastic thread, since that seems to be well regarded. But, I'm not sure how big the thread should be. They all seem so small! I'm a little worried I might be getting the wrong thread here. These are amethyst beads, so they're fairly heavy. Could someone point me in the right direction?