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.
How to crack marbles - 450 oven for 7 minutes then put marbles in a bowl of ice water. Turn into jewelry later. or turn into knobs for a dresser or cabinets. I did this burn my finger at so worth is mine are so nice