The Spring Carpet of Khusraw made for the audience hall of the Sassanian palace at Ctesiphon, Iraq. It consisted of about 650 m² (7,000 ft²) of silk and gold thread encrusted with emeralds. The carpet was cut up as booty by looters in AD635 and, from the known realization value of the pieces, must have had an original value of some £100 million ($195 million).