Viking ring with runes. Rune ring with Norns names. Runic divination ring.

Ring for cases when you need to quickly and unnoticed turn to the runes for advice.
The inscription on the outer ring is Norns names: Urd, Verdandi and Sculd

The Norns (Old Norse: norn, plural: nornir) in Norse mythology are female beings who rule the destiny of gods and men. They roughly correspond to other controllers of humans; destiny, such as the Fates, elsewhere in European mythology.

Beside these three famous Norns, there are many others who appear at a person's birth in order to determine his or her future.In the pre-Christian Norse societies, Norns were thought to have visited newborn children.[3] There were both malevolent and benevolent Norns: the former caused all the malevolent and tragic events in the world while the latter were kind and protective goddesses.
On the inner ring there are runes of the Elder futark and one empty field.
To get an answer or a prediction, simply rotate the outer ring and see which rune fell in the window.