When was "Glass Fragment" created?

This artwork was created 12th–15th century (?).

What medium is "Glass Fragment"?

Glass Fragment is Colorless glass.

Yes, Glass Fragment is in the public domain and available for free download under CC0 license.

Unknown Artist

12th–15th century (?)

Medium

Colorless glass

Dimensions

4 3/4 x 2 1/2 in. (12.1 x 6.4 cm)

Classification

Glass-Stained

Culture

French

Department

Medieval Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Gift of Dr. Bashford Dean, 1923

Accession Number

23.229.4-9