What medium is "Ostrakon with an Epistle of Severos, Bishop of Antioch"?

Ostrakon with an Epistle of Severos, Bishop of Antioch is Limestone with ink inscription.

Is "Ostrakon with an Epistle of Severos, Bishop of Antioch" in the public domain?

Yes, Ostrakon with an Epistle of Severos, Bishop of Antioch is in the public domain and available for free download under CC0 license.

This artwork was created after 508–640.

Unknown Artist

after 508–640

Medium

Limestone with ink inscription

Dimensions

Overall: 3 13/16 x 4 1/8 x 7/8 in. (9.7 x 10.5 x 2.3 cm)

Classification

Miscellaneous-Stone

Culture

Coptic

Department

Medieval Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Rogers Fund, 1912

Accession Number

12.180.62