Nenya

Nenya, also known as the White Ring, Ring of Adamant, and Ring of Water, was one of the three Rings of Power given to the Elves of Middle-earth in the Second Age.
==Description==
Nenya is described as being made of mithril and set with a "white stone" of adamant.
The ring was wielded by Lady Galadriel of Lothlórien, and was not normally visible; while Frodo Baggins could see it by virtue of being a Ring-bearer himself, Sam Gamgee told Galadriel he only "saw a star through [her] fingers."
==History==
Nenya was made by Celebrimbor and the Gwaith-i-Mírdain of Eregion in the Second Age, along with the other two Elven Rings, Narya and Vilya. Their existence was hidden from Sauron, so no evil touched the three Elven rings.
Nenya's power was preservation and concealment from evil. Galadriel used these powers to create and sustain Lothlórien. After the destruction of the One Ring and the defeat of Sauron, its power faded along with the other Rings of Power. Galadriel bore Nenya on a ship from the Grey Havens into the West, accompanied by the two bearers of the other Elven Rings. With the ring gone, the magic and beauty of Lórien also faded, and it was gradually depopulated; it was deserted by the time Arwen came there to die in FO 121.