When was "Chalcedony intaglio: Head of Jupiter Ammon" created?

This artwork was created 1st–3rd century CE.

What medium is "Chalcedony intaglio: Head of Jupiter Ammon"?

Chalcedony intaglio: Head of Jupiter Ammon is Chalcedony.

Yes, Chalcedony intaglio: Head of Jupiter Ammon is in the public domain and available for free download under CC0 license.

Unknown Artist

1st–3rd century CE

Medium

Chalcedony

Dimensions

H.: 3/4 x 9/16 in. (2 x 1.5 cm)

Classification

Gems

Culture & Period

Roman · Imperial

Department

Greek and Roman Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Gift of John Taylor Johnston, 1881

Accession Number

81.6.56