red granite limestone Turah limestone limestone white Tura limestone http://www.touregypt.net/featurestories/material.htm white Tura limestone Tour Egypt: Building Materials of the Pyramids limestone limestone limestone Turah limestone limestone granite Rough local limestone limestone basalt http://www.touregypt.net/featurestories/material.htm white Tura limestone fine white Tura limestone used by ancient Egyptians limestone red granite Turah limestone limestone