Steatite Polyhedron with Greek Letters in the Metropolitan Museum of Art, February 2008

Steatite polyheadron inscribed with letters of the Greek alphabet
Roman, Mid Imperial, 2nd-3rd century AD

Accession # 27.122.5

The polyhedron has 20 sides, each inscribed with a letter of the Greek alphabet from A (alpha) to Y (upsilon), so that only the last three letters (chi, psi, and omega) are missing. See a faience example (37.11.3) also displayed in this case.

Text from the Metropolitan Museum of Art electronic kiosk in the study collection.