Sandstone is an extremely hard and tough material and consists of consolidated masses of sand deposited by moving water or by wind. Some of the sandstone are so homogeneous and soft that they are capable of receiving most elaborate carving and filigree work. The colour of the rock is largely determined by the cementing material - iron oxides produces red or reddish-brown sandstone, and the other materials produce sandstone in white, greyish or yellowish sandstone.

Sandstone is an extremely hard and tough material and consists of consolidated masses of sand deposited by moving water or by wind. Some of the sandstone are so homogeneous and soft that they are capable of receiving most elaborate carving and filigree work. The colour of the rock is largely determined by the cementing material - iron oxides produces red or reddish-brown sandstone, and the other materials produce sandstone in white, greyish or yellowish sandstone.