A Fantasy Trope, but can show up in other genres as well. Want to show that some kind of sword is cool, powerful, deadly, etc? Make this sword black. It can be simply blued, but sometimes it is made of some fantasy metal which is naturally black. Meteoric iron is often misrepresented as a naturally black metal. This trope often overlaps with Evil Weapon and Artifact of Death, because the color black has not only the "cool" connotation, but also "Dark Is Evil" one. Many examples of black swords are not only superior to boring gray swords, but also more dangerous for the user. Examples: