Although the linear drawings inside the compartments have been transformed into half-palmettes and other designs, their origin in an attempt to imitate marble seems likely. The pattern of the layout is closely related to one which was popular in Roman floor mosaics.
1939, excavated at Tepe Madrasa in Nishapur, Iran by the Metropolitan Museum of Art's expedition; 1940, acquired by the Museum in the division of finds
Wilkinson, Charles K. Nishapur: Some Early Islamic Buildings and their Decoration. New York: The Metropolitan Museum of Art, 1986. pp. 19, 163, ill. fig. 5 (color), fig. 1.196 (b/w).