Medieval gold ring found in Tønsberg – The History Blog
https://www.thehistoryblog.com/archives/75042
"An archaeologist working alone in the historic center of Tønsberg, Norway, discovered a medieval gold ring with elaborate decoration and a blue oval gem set in the middle. Only 63 other gold rings from the Middle Ages are in the joint database of the Norwegian university museums collections, and it’s been 15 years since a gold ring from the period was found in Tønsberg."