The Seven rings were given to the Lords of the seven clans of Dwarves and their power was in kindling the fire of greed for property and lust for gold. Sauron knew that the Dwarves could not easily be turned to him or made into his servants, they were too solid. It is told that the Seven were given to each of the seven hoards of Dwarves and they were used to lay the foundation of the seven Dwarven kingdoms. But Sauron hoped that greed in the end would ruin them and in that he was right. Of the Seven all has returned to Sauron or been destroyed in the hot fire of the Dragons.

