Medieval whatsit from germany

[Westfront]

A buddy had this thing under his shovel a couple of weeks ago. Its brass with enamel. Maybe from a belt? Frankonian? Dont think its celtic because of the ornaments. Need some help identifying...


Thanks!

 

[CRUSADER]

http://finds.org.uk/database/artefacts/record/id/61431

I know its a ring, but shows they used crosses