Ruinous Coil "Galelion"

A ring that holds the power of the two-headed beast that reigns over the blazing volcano. It massacred many adventurers, and the despair in their final moments turned its flames black. Hungering for more prey, it attacked the nearby towns until a devout nun threw herself into its dark fire to extinguish it with her pure soul. It returned to the volcano, but all that remained of the nun was her ring, warped by the heat.