In the journal Scanning, the researchers recount how they used a scanning electron microscope to investigate the origins of the ring. Notably, they discovered that the stone in the ring is actually colored glass – at the time an exotic material for the Vikings, though it had been made for thousands of years in the Middle East and North Africa.

Even more notably, the ring displayed a remarkable lack of wear, leading the authors to speculate that it had few – if any – owners in-between its creator and its Viking owner. Instead, Wärmländer and his colleagues suggest, it appears to show direct contact between Viking society and the Abbasid Caliphate that dominated much of the Middle East and North Africa. The authors write, “it is not impossible that the woman herself, or someone close to her, might have visited — or even originate from — the Caliphate or its surrounding regions.”

While physical evidence of it is unusual, there have been plenty of accounts of Scandinavians from this period crossing paths with the early Muslim world.