Adamantium

Adamantium is the common name for two distinct materials: the first material is a magical, unstable alloy, known as liquid black stone. Liquid black stone is created under extreme circumstances of pressure and heat, using Sorcery and Elemental Magic in tandem. When created, liquid black stone is then molded and formed into distinct shapes, that when cool, transform into stable adamantium. Adamantium is indestructible by any means, including sorcery.