The Vesuvian Diamond Dagger is a weapon used by Lena Sabrewing in the DuckTales episode The Other Bin of Scrooge McDuck!. According to Magica De Spell, the dagger can cut through any material like the uncuttable enchanted quadriamond string holding Scrooge McDuck's Number One Dime. Webby Vanderquack also used the same dagger to defeat a Unicorn later in the episode.