5th-4th century BC. An amethyst cabochon set into a later silver finger ring with ellipsoid bezel and stepped cell. 11.45 grams, 26.47mm overall, 19.07mm internal diameter (approximate size British Q, USA 8, Europe 17.49, Japan 16) (1"). Ex collection of a Surrey, UK, gentleman; acquired on the UK art market; previously on the European art market before 2000.