Ca. 100-300 AD.A jasper stone intaglio engraved with a standing figure of Minerva (Greek Athena), the goddess of wisdom and warfare. She stands robed, wears a Corinthian helmet, and holds a sword in her left hand. This fine intaglio is set in a later gold ring of a flat-section hoop, widening at the shoulders, which are decorated with deep, slightly diagonal grooves.Size: D: 18.35mm / US: 8 1/4 / UK: Q1/2; 15gProvenance: Property of a London doctor; Previously in a private Swiss family collection since the 1980s.