What a great idea for a girls birthday party.DIY Baked Marble Necklace [Tutorial] : Bake marbles at 350 F for 20 min, drop them into ice bath, and watch them crack into a pretty pattern! Click photo for how to make them into a necklace.
Bake marbles at degrees for 20 minutes (for more cracking-look, bake at 500 degrees for 30 minutes). Remove and carefully drop into pan of ice water. Glue end caps to finished marble (w/starter rings) to create bracelets, earrings, pendants, ornaments