Gemma Augustea: Dioskourides’ Imperial Cameo at Kunsthistorisches Museum

The Gemma Augustea, a large cameo carved by Greek artist Dioskourides between 9 and 12 CE, is housed at the Kunsthistorisches Museum in Vienna. Measuring 19 by 23 cm, it is made from double-layered Arabian sardonyx and features 20 figures across two registers. The upper register depicts Emperor Augustus as Jupiter, surrounded by allegories including Roma, Oikumene, Okeanos, and Italia, along with Tiberius and Germanicus. The lower register shows gods raising a tropaion while barbarian captives are bound. The cameo celebrates Tiberius’s victory over the Dalmatians in the Great Illyrian Revolt (6–9 CE) and reinforces Augustus’s divine rule. Its provenance includes the Abbey of Saint-Sernin in Toulouse (1246) and later the Habsburg collection via Emperor Rudolf II. Dioskourides, a Greek artist working in Rome, joined the imperial cameo workshop under Augustus. The gem’s attribution to him is supported by its superior quality, despite some historians suggesting imitators.