When was "Portrait of a lady" created?

This artwork was created cameo ca. 1580, mount second half 19th century.

What medium is "Portrait of a lady"?

Portrait of a lady is Agate and gold.

Yes, Portrait of a lady is in the public domain and available for free download under CC0 license.

Unknown Artist

cameo ca. 1580, mount second half 19th century

Medium

Agate and gold

Dimensions

1 3/8 × 7/8 in. (3.5 × 2.2 cm)

Classification

Lapidary Work-Gems

Culture

Northern Italian

Department

European Sculpture and Decorative Arts

Museum

Metropolitan Museum of Art, New York, NY

Credit

The Milton Weil Collection, 1938

Accession Number

38.150.26