Ring of Varda
The Ring of Varda is a rare collectible item from the PlayStation game Castlevania: Symphony of the Night. It is so effective that some consider it cheating to deliberately collect one (or two, for as a ring one can be worn on each hand). It is dropped by the Paranthropus, a moderately durable enemy that is found only once in the first Castle. The short description given is 'Golden ring to rule over all!', though it has little to do with J. R. R. Tolkien's Lord of the Rings trilogy.
There are a number of Tolkien references in C:SotN, see http://www.geocities.com/purple_shad/al/alc_itemstolkien.html