Because I’m Norwegian and absolutely love Norse mythology, I own a lot of Norse jewelry.
This is the other side, it’s hard to see in the picture, but it is the god Odinn on his eight-legged steed Sleipnir. These are other pendants depicting Norse runes. Pendants like these were often worn for protection or luck. The one of the left is for protection, the one on the right is for daylight.
This ring is another piece modeled after Viking jewelry. I also never take this off. It depicts the World Serpent of Norse mythology (one of Loki’s sons) circling the world (or my finger in this case).