No reproducible photograph
Unrecorded Roman glassworker and gem-cutterThe Portland Vase
c. AD 5-25, disputed. Low dates in the range c. 30-20 BC retain scholarly support, and the vase is often placed generally in the reign of Augustus, 27 BC to AD 14. - Cameo glass: cobalt-blue glass with an opaque white glass overlay, the white cut back in relief