Grindelwald Pendant (costume)

The pendant contains the mixed blood of Dumbledore and Grindelwald. It is a magical totem, a blood pact, made between the two as young men, that prevents one from causing harm to the other. In “Fantastic Beasts: The Crimes of Grindelwald”, Newt Scamander’s Niffler stole Grindelwald’s pendant and returned it to Dumbledore.