10th-13th century AD. A restrung necklace composed of conical, spherical and facetted barrel-shaped jet beads; interlaced with gold-in-glass barrel-shaped glass beads; central element of facetted conical jet bead with inlaid ring-and-dot and teardrop-shaped decoration, oblate jet bead below. 115 grams, 43cm (17"). Property of a Hampstead gentleman; from his family collection formed since the 1970s.