ROMAN IRON RING WITH GREEN JASPER INTAGLIO DEPICTING APOLLO DRIVING THE SUN CHARIOT Ca. AD 100 - 300. A green jasper intaglio engraved with Apollo driving a quadriga, his arm raised, holding the reins, with the horses shown advancing to the left. The oval intaglio is set into a broad, domed iron bezel with a thick, tapering hoop. For similar see: D. Del Bufalo, Catalogo Illustrato delle Glittica neòla collezione Santarelli, Inv. 47/56g (cameo) Size: D:14.48mm / US: 3 1/4 / UK: G; Weight: 7.8g Provenance: Private London collection, acquired on the US art market, in the 1990s.