Sardonyx cameo portrait of the Emperor Augustus, A.B. 41-54, Sardonyx, metropolitan museum The portrait depicts the Emperor Augustus as a triumphant demigod. He is wearing a aegis which is a cape associated with Jupiter and Minerva. It was decorated with the head of a wind god. Which could be a representation of summer winds, which brought the corn fleet from Egypt to Rome. Which could also be a reference to Augustus’s conquest of Egypt after the defeat of Mark Antony and Cleopatra in 31 B.C. Julius Caesar passed the royal line to Augustus but he had a first son with Cleopatra. Cleopatra after a while married Mark Antony and had kids with him. Which could also be a reason as to why Augustus decided to take over Egypt.