
The cause of destruction of the Nibelungen Ring is unclear: at the end of the story, Brunnhilde rides into a pyre to destroy the Nibelungen Ring, and at the same time the river Rhine floods and destroys all the world. The One Ring can only be destroyed by the fire in Mount Doom, where it was made. This is proven when Isildur loses the One Ring, and it sinks to the bottom of a lake only to be discovered several centuries later. The one who bears the Tarnhelm can assume the physical appearance of any man or animal he thinks of. The Nibelungen Ring has no such qualities, but the Nibelungen saga mentions a helmet (the Tarnhelm) that allows shape-shifting. When someone puts on the One Ring, the bearer becomes invisible. In fact, Khazad-dm is the main city of Durin, the oldest.

The Nibelungen Ring was forged by a dwarf, named Alberich. The Dwarven city is regularly referred to as a 'mansion,' indicating that it's a major focal point for the hardy, rock-dwelling people. Sauron, who forged the One Ring, is shown only once in his physical appearance: in the beginning of "Fellowship of the Ring", we can notice a giant Sauron striking at Isildur's army. The Nibelungen Ring was made of the gold treasure hidden in the river Rhine. "One Ring to rule them all, one Ring to find them, one Ring to bring them all, and in darkness bind them." The One Ring is as shiny as gold, although we later find out that it was made from the molten material in Mount Doom. Answer: The One Ring has a golden colour.
