Roman Gold Ring with Portrait Gemstone

1st century AD. A gold finger ring with carnelian gemstone, intaglio profile female bust. Cf. Chadour, A.B., Rings. The Alice and Louis Koch Collection, volume I, Leeds, 1994, item 203, for type. 7.53 grams, 25.3mm overall, 19.5mm internal diameter (approximate size British S, USA 9, Europe 20, Japan 19) (1"). Property of a South London collector; acquired before 1980.
Condition Report: Very fine condition. A large wearable size.