What medium is "Keystone from an Arch with Cross and Acanthus Leaves"?

Keystone from an Arch with Cross and Acanthus Leaves is Limestone; carved in relief.

Is "Keystone from an Arch with Cross and Acanthus Leaves" in the public domain?

Yes, Keystone from an Arch with Cross and Acanthus Leaves is in the public domain and available for free download under CC0 license.

This artwork was created 4th–5th century.

Unknown Artist

4th–5th century

Medium

Limestone; carved in relief

Dimensions

H. 10 5/8 in. (27 cm) W. 7 7/8 in. (20 cm) D. 5 1/8 (13 cm)

Classification

Sculpture

Department

Islamic Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Rogers Fund, 1910

Accession Number

10.175.15a