The Vienna Cameo, Greek (Ptolemaic), Early Hellenistic period, 278-270/69 B.C. Ten–layered ony
The Vienna Cameo, Greek (Ptolemaic), Early Hellenistic period, 278-270/69 B.C. Ten–layered onyx (Indian sardonyx). H. 41/2 in. (11.5 cm), W. 4 in. (10.2 cm), Antikensammlung, Kunsthistorisches Museum, Vienna (IXa 81) -- source link
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