Dwarven Ring of Dwálin's Tribe

Sindya, Ring of Dwálin the wise's House, known as the Ring of Artifice, was given in secret to Brúni, who initially did not knew the gift came from Sauron.The Ring passed on by Brúni to his heirs until the fall of Barazbizar when the dwarven Mine was delivered by treason to the Witch-King who returned it to his Master Sauron.