What medium is "Carnelian engraved gem with a portrait of Sokrates"?

Carnelian engraved gem with a portrait of Sokrates is Sard-Carnelian ?.

Is "Carnelian engraved gem with a portrait of Sokrates" in the public domain?

Yes, Carnelian engraved gem with a portrait of Sokrates is in the public domain and available for free download under CC0 license.

This artwork was created ca. 1st century BCE–1st century CE.

Unknown Artist

ca. 1st century BCE–1st century CE

Medium

Sard-Carnelian ?

Dimensions

Overall: 9/16 x 7/16 in. (1.4 x 1.1 cm)

Classification

Gems

Culture & Period

Roman · Late Republican or Early Imperial

Department

Greek and Roman Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Gift of John Taylor Johnston, 1881

Accession Number

81.6.81