Harry Potter - Salazar Slytherin's medallion Horcrux
Harry Potter Gadget - Harry Potter Horcrux medallion Salazar Slytherin
Noble Collection Harry Potter Gadget
It originally belonged to Salazar Slytherin and then was passed on from generation to generation to his descendants.
It's a solid gold medallion with a serpentine S studded with green stones, probably emeralds, like those that decorate the serpent statue
located inside the Chamber of Secrets and those that fill the enchanted Slytherin hourglass located in the great room.
The Horcruxes are items in which Voldemort has hidden a fragment of his soul in order to reach immortality.
The Horcruxes cannot be destroyed by conventional means and spells but must be damaged in an irreparable way, in order that the objects and the creator's soul part to be destroyed.
The only known magic items or spells that can do this are the basilisk venom and Fiendfyre.