Circa 500-600 AD With a heavy, plain hoop, flat on the interior, rounded on the exterior, expanding slightly to the angular shoulders, the high oval bezel set with an inscribed amethyst gemstone. For similar see: Christie's, December 11, 2014, lot 286. 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: 17.4mm / US: 7 / UK: O; 4.8g Provenance: Private London collection of Ancient Art; previously with a London art dealer; acquired from a Japanese collection (1970-2010).