Amoracchius, Excalibur, one of the three swords of the cross.
What is it made out of. I always thought steel. But then re listening to Grave Peril I discovered something odd. When Harry went to use the sword on the hell hounds he drops it, then the Leanansidhe picked up the sword. The description of the sword is a wire bound hilt with a crusader style bound hilt. The nail worked into the hilt. With that description it's all metal and we know it was unsheethed since Harry mentioned it just before hand.
Since the Fey can not touch iron and steel is mostly made of iron. The box cutter blades are not pure iron so the standard stainless steel does hurt. But Lea touched Amoracchius without issue. What is the metal that is used to allow her to touch the blade?
