Crystal stone is a metamorphic limestone with grains large enough to be visible with unaided eye, it has a full crystalline texture and mainly composed of calcite and small amounts of Wollastonite. The water absorption is usually under 1%, the Specific gravity is 2.65 g/cm3 & Compressive strength is 115 Mpa. It has a low porosity & proper Abrasion resistance. Crystal stone is suitable for exterior facades & pavements and has a good adhesion with grout. In order to avoid slippery, bush-hammered & cubic finishes can be applied on it.