When was "Shell (?) amulet" created?

This artwork was created ca. 2150–1950 B.C..

What medium is "Shell (?) amulet"?

Shell (?) amulet is Ivory or bone.

Yes, Shell (?) amulet is in the public domain and available for free download under CC0 license.

Unknown Artist

ca. 2150–1950 B.C.

Medium

Ivory or bone

Dimensions

H. 1.2 × W. 0.7 × D. 0.4 cm (1/2 × 1/4 × 3/16 in.)

Classification

Amulet, shell (?)

Period

Late Old Kingdom–Early Middle Kingdom

Department

Egyptian Art

Museum

Metropolitan Museum of Art, New York, NY

Credit

Rogers Fund, 1959

Accession Number

59.100.10