Circa 400 AD The plain hoop rounded on the exterior, flat on the interior, with a high flaring square bezel, the sides stamped with festoons and stippling, set with a flat emerald. For similar see: Christie's, December 5, 2012, lot 441. The item has undergone X-ray fluorescence analysis to confirm the metallurgical content suggesting its ancient origin and lack of modern trace elements. Size: D: 13.6mm / US: 2 1/2 / UK: E; 2.6g Provenance: Property of a London Ancient Art Gallery; formerly in the famous Alison Barker collection, a retired London barrister; acquired between early 1960s to 1990s.