Ring of Thrór
While Sauron himself gave the Dwarves their Rings of Power, however this one was It was originally given to King Durin III of Khazad-dûm by Celebrimbor, and it remained in his line for thousands of years until it was inherited by Thrór, the King under the Mountain.
It was during Thrór's reign that Smaug descended on Lonely Mountain and drove the Dwarves into exile. Long after his kingdom's destruction, Thrór passed the ring to his son Thráin, who dwelt for many years as an exile from his ancient home.
At last, Thráin set out on an ill-fated quest to regain his kingdom, but he was captured by the spies of Sauron, and the Ring of Thrór was lost forever.
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