"only takes in that which makes it stronger". It is subsequently used to destroy three of Voldemort's Horcruxes. Because the Sword was goblin-forged, it is indestructible. According to Griphook the goblin, the Sword was originally forged by the goblin Ragnuk the First and "stolen" by Gryffindor. The Sword was taken by Griphook when the Sword fell from Harry's grasp during the raid on Bellatrix Lestrange's vault in book seven. The sword returned to wizard hands when Neville pulled it out of the Sorting Hat and used it to decapitate Nagini, Voldemort's snake. This shows that no matter where the sword happened to be at the time, it will reappear in the Hat when a true member of Gryffindor house is in need of it. Rowling has confirmed that Gryffindor did not steal the sword from Ragnuk and that this belief is merely part of Griphook's goblin mistrust and prejudice against wizards. Godric Gryffindor commissioned Ragnuk the First to make the sword for him under his specifications. Once Ragnuk had made the sword, he was so fond of it that after he had presented it to Gryffindor, he told the goblins it had been stolen and sent minions to retrieve it for him. Gryffindor defeated the goblins using magic and instead of killing them, he bewitched them to go back to Ragnuk and say that if he tried to take the sword again, he would use it against them. The king took the threat seriously, but still insisted it had been stolen from him until the day he died. It is mentioned in the Deathly Hallows that the Sword of Gryffindor is supposed to be in Bellatrix Lestrange's vault, placed there by Severus Snape. Unknown to Bellatrix, that sword was only a replica. When Harry, Ron and Hermione were captured and brought to Malfoy Manor, she spotted the sword near one of the Snatchers, who intended to keep it. She killed him and forced the rest out of the room, then tortured Hermione for information about the sword. But at Harry's request, Griphook lied and said that the sword was a forgery. Bellatrix's reaction to having her vault possibly broken into convinced Harry that the Horcrux was also placed in her vault. Philosopher's stone Based upon the ancient alchemical idea of the philosopher's stone, the stone is owned by Nicolas Flamel and first mentioned in Harry Potter and the Philosopher's Stone.