What medium is "Garnet ring stone with the head of the dog Sirius"?

Garnet ring stone with the head of the dog Sirius is Garnet.

Is "Garnet ring stone with the head of the dog Sirius" in the public domain?

Yes, Garnet ring stone with the head of the dog Sirius is in the public domain and available for free download under CC0 license.

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

Unknown Artist

1st century BCE–3rd century CE

Medium

Garnet

Dimensions

Overall: 9/16 x 1/4 x 3/16 in. (1.4 x 0.6 x 0.4 cm)

Classification

Gems

Culture & Period

Roman · Late Republican or Imperial

Department

Greek and Roman Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Gift of John Taylor Johnston, 1881

Accession Number

81.6.138