[katiesue]

The locket was Salthazar Slytherins - and passed on to eventually be worn by Tom Riddle's (Voldemorts) mother. She sold it to Burkes & Borgin when she was preggers for cash. Then it was bought by the crazy lady Tom killed and took all the valuables from including the hefflepuff cup. Then Regulus stole it after Voldemort made it a horcrux but died before he could open it leaving it in the care of Kreacher who couldn't ever open it either. Then Mudungus stole it from the house and tried to sell it in Diagon Alley. But Umbridge caught him and made him give her the locket. Then Harry stole it and killed it with the Griffendor sword (the real one not the fake one).