4th-8th century AD. A carnelian discoid cloison with intaglio Chiron the centaur in profile in a (partial) wreath, set in a later gold finger ring. 7.05 grams, 32mm overall, 17.50mm internal diameter (approximate size British O, USA 7, Europe 14.98, Japan 14) (1 1/4"). Property of a retired English university professor; acquired from Artemis Gallery, New York, USA; previously in a private East Coast, USA collection; accompanied by an original certificate of authenticity/sales receipt from Artemis Gallery.