ancient relics

I've seen alot of these rings for sale saying they're viking/middle age wedding rings but I have no idea what the symbols are or if they're authentic or not. I'd love to buy some but since I'm not so sure about them being genuine I'd love others opinions.

Hello everyone. I found this in a dry run off creek bed near a garden I was working in. There are allot of stones, mostly round river rock. Couldn't have been transported from too far away... (California, in between Santa Cruz and San Francisco). It was the eye that caught my attention. There...