He was also informed that Severus Snape-Prince was successful in bringing the diadem of Rowena Ravenclaw, which was a horcrux too. The man sent the horcrux via house elf and later in the afternoon, he was informed that the horcrux had been purged and destroyed. This meant that there were only two other horcruxes to be destroyed. The Gaunt ring and another horcrux that was unknown to them.