3510184 Roman ring stone in modern setting (carnelian set in gold) by Roman, (1st century AD); width:2, ring size:8 cm; Private Collection; (add.info.: The nearly round, flat stone engraved with a figure of Diomedes holding the Palladion in his left hand, stepping over an altar, a sword in his right hand, his mantle draped over his left arm, a column topped by a statue to his right. Mounted as a ring in a European gold setting of the late 18th or early 19th century); Photo 穢 Christie\'s Images.