The Mythril Ring is a thin, royal blue ring. The front of the ring is much wider and has a large, dark blue circle on it. A royal blue symbol identical to the crown charm on Sora's necklace is placed in the center of this circle. Thin, dark blue patterns decorate the sides of the circle and the base of the ring.
The Mythril Ring's name references the primary material used in its recipe, Mythril.
Kingdom Hearts II