When was "Opaque white on opaque blue glass cameo" created?

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

What medium is "Opaque white on opaque blue glass cameo"?

Opaque white on opaque blue glass cameo is Glass, opaque white on black.

Yes, Opaque white on opaque blue glass cameo is in the public domain and available for free download under CC0 license.

Unknown Artist

1st century BCE–3rd century CE

Medium

Glass, opaque white on black

Dimensions

Length: 1 11/16 in. (4.3 cm)

Classification

Gems|Glass

Culture & Period

Roman · Late Republican or Imperial

Department

Greek and Roman Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Gift of J. Pierpont Morgan, 1917

Accession Number

17.194.16