The Tazza Farnese is a sardonyx cameo similar in form to a Greek phiale or Roman patera. It features relief carvings on both its exterior and interior surfaces and is around twenty centimeters in diameter. Many archaeologists and art historians attribute the Tazza to the Hellenistic Period, asserting that its blending of Greek and Egyptian cultural symbols, as well as the funds necessary to commission such a large gemstone cameo, tie it to the Ptolemaic court.