Marshalls Fairstone Setts give are the premium driveway product and made from specially graded Indian Sandstone. All Marshalls Fairstone Sandstone is sourced from Kota in India as part of their ethical trading initiative. Fairstone Sandstone is one of the most durable and hard wearing Sandstone products available. Fairstone Driveway Setts should be laid on a mortar bed of 25mm and pointed with a minimum 10mm mortar joint.