Marvolo Gaunt's Ring

This is a gold ring with a big black stone inset into it, that use to belong to salazar slitherin, but was passed down through generations to marvolo gaunt, This ring was used by tom marvolo riddle (lord voldemort)as a horcrux. In harry potter and the half blood prince, you learn that Dumbledore destroyed it, meaning one less horcrux for Harry, Ron and Hermione to find in Harry potter and the deathly hallows.