Experts say the find challenges the belief that Iron Age wealth was limited to southern Britain.
Researchers believe the brooch came north with Roman soldiers, possibly as a ritual offering or battle trophy.
Analysis shows Greeks, Phoenicians, and Italians coexisted in ancient Ischia, forming a cosmopolitan society.
Similar ritual spoons have been found in Britain, Ireland, and France. The British Museum holds several pairs, one engraved with a cross and the other with a small hole.
At Puig Castellar, isotope analysis revealed that three of the four individuals differed from the local strontium reference, suggesting they were probably not from the local community.
Decapitation may be part of a pattern of ritual killings during the Iron Age period.
Archaeologists in Poland uncovered 26 iron objects made from a single meteorite.
"Violence is a particularly common theme for later prehistoric human remains from watery places," said the head researcher.
Some old Scandinavian writings trace kings back to Christ’s birth, once dismissed as mere tales—but perhaps there’s truth in them.
'There are less than 10 Iron Age helmets in Britain and every single one is unique,' said Julia Farley, Iron Age curator at the British Museum.