Percy Jackson and the Olympians: Legends

This metal is deadly to creatures of the magical world. Unlike mortals, demigods are also affected by it because of their blood. Objects made of celestial bronze are known to emit a faint golden glow. If a weapon made of celestial bronze is used to kill a monster, the metal will disperse the monster's physical form into dust and send it to Tartarus. Celestial bronze weapons cannot harm mortals; they simply pass through mortal bodies as if they were made of smoke.