When was "Head of Poseidon" created?

This artwork was created probably late 18th century.

What medium is "Head of Poseidon"?

Head of Poseidon is Onyx, mounted in gold as a pendant.

Yes, Head of Poseidon is in the public domain and available for free download under CC0 license.

Unknown Artist

probably late 18th century

Medium

Onyx, mounted in gold as a pendant

Dimensions

Overall: 2 x 1 1/2 in. (5.1 x 3.8 cm); cameo in bezel: 50.7 x 38.3 x 10.8 mm

Classification

Lapidary Work-Gems

Culture

Italian

Department

European Sculpture and Decorative Arts

Museum

Metropolitan Museum of Art, New York, NY

Credit

The Milton Weil Collection, 1939

Accession Number

39.22.32