ROMAN BLACK JASPER INTAGLIO DEPICTING JUPITER WITH RADIANT CROWN IN GOLD RING. Ca. AD 50 - 200. A black jasper intaglio engraved with the bearded head of Jupiter in left profile, wearing the radiate crown. The gem is set in a circular gold collet with an upright rim, mounted on a flat hoop with broad shoulders, forming a gold ring, possibly of a later date. For similar see: D. Del Bufalo, Catalogo Illustrato della Glittica nella Collezione Santarelli, Cat. n.i. 50/93c. Size: D:17.53mm / US: 7 1/4 / UK: O; Weight: 7g Provenance: Private London collection; formerly in Austrian private collection 1980s-early1990s This item has been cleared against the Art Loss Register database and comes with a confirmation letter.