Those steps are sawn on 3 or 4 sides and the surface is natural. The apparent surface of the steps is sold in 3 options:

–Natural Face, this option shows the natural break of the stone for a natural look.
–Sawn Face, this option shows a net cut of the stone for a modern look.
–Sawn Face exploded, this option shows a straight cut and the façade is mechanically exploded.