Celebrimbor was a great smith and was responsible for casting the rings of Power, except for the One Ring, which Sauron crafted alone. Celebrimbor felt Sauron put on the One Ring and realised the danger. He hid or destroyed as many rings as he could. He gave the most powerful three rings to people who might resist Sauron, Narya to Cirdan, Vilya to Gil-galad and Nenya to Galadriel.