I
use mostly Italian (Moretti) and German (Lauscha) "soft" glass,
and all of my finished beads are popped immediately
into a hot kiln (970 degrees - ouch!) to anneal
overnight for lasting beauty. Never buy beads that
are not kiln annealed, as they may break at any time
and possibly injure you.
And by all means, don't let your children play with glass beads as they may choke on them.
About the jewelry.
My jewelry items feature 100% sterling
or fine silver findings (e.g. clasps, spacer beads), freshwater pearls, and
Swarovski crystals, and are strung on multi-strand
plastic-coated wire for strength. I make my own clasps and rings.