Godric Gryffindor's Sword or The Sword of Gryffindor was a thousand-year-old, goblin-made sword owned by the famed wizard Godric Gryffindor, one of the four founders of Hogwarts School of Witchcraft and Wizardry.
The sword was later used in Albus Dumbledore's and Harry Potter's hunt for Horcruxes, as a tool of destruction against the Horcruxes, as means to make Lord Voldemort mortal again.
Godric Gryffindor's Sword is made of pure silver, and its hilt is set with egg-sized rubies — the gemstone that is used to symbolize the House of Gryffindor at Hogwarts. The full name of Godric Gryffindor is also engraved vertically just beneath the hilt.
Powers and Abilities
Much like an ordinary wizard's wand, Godric Gryffindor's sword appears to be almost sentient, responding to appeals for help by Gryffindor's chosen successors. Whenever a "true Gryffindor" needs it, the Sword will let itself be pulled out of another of Godric Gryffindor's artifacts - The Sorting Hat.
As Goblin's silver, it imbibes only substances which strengthens it, which can then be used against enemies. This means that it never requires cleaning. Due to Harry Potter killing Salazar Slytherin's Basilisk with it, the sword is imbibed with Basilisk venom and can destroy Horcruxes.
The sword magically appears in the Sorting hat, brought into the Chamber of Secrets by Fawkes. Harry draws the sword out of the sorting hat, and tries to beat back the Basilisk with it. Harry climbs up to the top of the Statue of Slytherin and finally slays the Basilisk with the sword.