There's a boy who owns a necklace of clear white. It hangs on a golden chain that has been around for generations. It goes red when the wearer is in danger. Black means death, the darker it is, the closer death is. The boy was walking with all his friends and wasn't paying attention to the necklace. It slowly turned black, as a car sped out of control.

The white necklace got dyed in a pool of red.

There's a little girl who owns a cursed necklace of clear white. Everyone who's worn it has died, just ask the boy who owned it before.