Stone Knife

Most famous for its being the instrament of Aslan's sacrifice by Jadis at the Stone Table, the Stone Knife was a knife of Charn origin. Jadis used the blade at the Fight at the Lamppost in The Magician's Nephew. She also utilized it at the Battle of Beruna. After her death it was placed on Aslan's Table on Ramandu's Island. The blade was made, not of metal as other knives are, but of stone, possibly obsidean (see that rock's article on Wikipedia), and was noted to have "a strange and evil" shape.