Swedish researchers have used scanning to examine a ring found in a Birka grave . The ring carries an Arabic inscription thought to be `` for/to ( the approval of ) Allah , they say . Their analysis suggests the ring was little worn , meaning trade ties could have been close .
Swedish researchers have used scanning to examine a ring found in a Viking grave . The ring carries an Arabic inscription thought to be `` for/to ( the approval of ) Allah , they say . Their analysis suggests the ring was little worn , meaning trade ties could have been close .