Samus2001
Почитал на вики про кольца. Золото плохим не стало, просто кольца сделали гномов более жадны... более домовитыми. Тогда получается что им вставляло не только золото, но и каменья, мифрил и прочие лошадки с платтюфками.

The Seven[edit]
Also in the Second Age Sauron gave the Seven to various Dwarf-lords (though the Dwarves of Moria maintained a tradition that the ring given to Durin III came directly from the Elven smiths).[8][9] Gandalf mentions a rumour that the seven hoards of the dwarves began each with a single golden ring, and although the Dwarves used their rings to increase their treasure, Tolkien does not explain how the rings accomplished this (save for a reference that the rings "need gold to breed gold"). The main power of the Seven on their wearers was to excite their sense of avarice. The wearers did not become invisible, did not get extended life-spans, nor succumb directly to Sauron's control – though he could still influence them to anger and greed.[1]

Over the years, Sauron recovered three rings from the Dwarves, the last from Thráin II during his final captivity in Dol Guldur some years before the beginning of The Hobbit. The remaining four, according to Gandalf, were destroyed by dragons.[2]

Until the Council of Elrond, the Dwarves did not know that Thráin had held the ring of Durin's line and had lost it to Sauron. They thought instead that it might have been lost when Thrór was killed by Azog in Moria.[5] One of the motivations for Balin's doomed expedition to Moria was the possibility of recovering the ring. Sauron's messenger attempted to bribe the Dwarves of Erebor for news of Bilbo (the last known bearer of the One) with the promise of the return of the remaining three of the Seven and control over the Mines of Moria.