The 10 dwarvish rings of Gedralor

It is said that Gedralor, First King of the Mountains, Jewelry Crafts Master, crafted 10 magic rings, all made of precious metals, giving each ring magic abilities. He then gifted one ring to the leader of every dwarvish tribes of the Mountains, thus uniting the tribes into the first Dwarvish Kingdom. He kept for himself the ring of Life.
* The Ring of Fire, made of rakenite. It was gifted to the Balderk tribe. * The Ring of Ice. Gifted to the Dankil tribe. * The Ring of Poison, made of gold, and soaked in the blood of a green dragon. Gifted to the Holderhek tribe. * The Ring of Animals, made of bones and enchanted by a druid. Gifted to the Loderr tribe. * The Ring of Flora, made of wood and enchanted by a druid. Gifted to the Gorunn tribe. * The Ring of Death, made from the bones of a lich. Gifted to the Lutgerh tribe. * The Ring of Lightning, made of cledrum. Gifted to the Ungart tribe. * The Ring of Shadow. Gifted to the Torunn tribe. * The Ring of Force, made of gold and enchanted by a wizard. Gifted to the Strakeln tribe. * The Ring of Life. Kept by the Rumnaheim.
Most of the Rings are lost. The Ring of Life is said to be in Gedralor's tomb, though no one knows where it is. The Ring of Death is said to be owned and used by Tirist, Necromancer of Duna.
There was one more tribe, the Ozdalk tribe, but they disappeared in -327¹.

References

1 : See Ozdalk page.