Angrist

An extraordinary knife made by the great smith Telchar of Nogrod, that was able to cut iron as easily as wood. It was carried by Curufin son of Fëanor, who wore it by his side without any sheath. Curufin held power for a time in Nargothrond with his brother Celegorm, but after Lúthien defeated Sauron and freed his prisoners from Tol-in-Gaurgoth, many of them returned to Nargothrond and turned its people against the brothers. Forced to leave, they set out to ride to the northern lands of their brother Maedhros, but on the journey they came upon Beren and Lúthien. Attacking, they were defeated, and Beren took the knife Angrist from Curufin.

It was, perhaps, fate that Beren took the iron-cutting knife. When he found himself at the Throne of Morgoth while the Dark Lord was in an enchanted sleep created by Lúthien, Beren used Angrist to cut free one of the Silmarils from the claws that bound it to the Iron Crown. Having taken the Jewel, he chose to go beyond the goal of his quest and free all three of the Silmarils, but as he tried to cut the second free from its prison, Angrist snapped, and a shard of its broken blade struck the face of the slumbering Morgoth. Because of the breaking of Angrist, Beren and Lúthien were forced to flee with just a single Silmaril, while the other two remained in the power of the Dark Lord.