St. Cuthbert's Beads.
Reading edition
These beads were made from the single joints of the articulated stems of Encrinites. The central perforation permitted them to be strung. From the fancied resemblance of this perforation to a cross, they were formerly used as rosaries, and associated with the name of St. Cuthbert—
"On a rock by Lindisfarm St. Cuthbert sits and toils to frame The sea-born beads that bear his name."