Dwarven Ring of Sindri's Tribe

The Ring of Sindri's Folk had been given to Darsha by disguised ambassadors of Sauron.Darsha who initially did not knew the ring came from Sauron, passed it on to his heirs.The Ring vanished with Darsha's heir Buldin who, being exiled, isolated himself with the rest of his host at Nurunkizdin.It was generally believed that Sauron's servants later captured Buldin's heir and forced him to hand over his Ring to the Lord od Mordor.