Celtic Knot Necklace, Celtic Knot Locket, Irish Jewelry. Celtic Jewelry, Silver Locket Necklace, Locket with Swallow, Silver Sparrow. This delightful vintage style locket features a simple Celtic Knot framed with a graceful holly leaf and berries filigree. A darling swallow charm adds a bit of whimsy. This locket measures 1.25 inches (32mm) in diameter, and the chain closes with a secure lobster claw clasp. All components are silver plate. . Your jewelry will arrive in a pretty gift box. ...