Artificial stone is made by crushing and grinding natural stone and then re-constituting it, in a mould, with cement mortar. It can also be re-constituted with a resin binder! Specifications,12"x12"x3/8"(305x305x10mm) 18"x18"x1/2"(457mmx457mmx12mm)24"x24"x3/4"(610mmx610mmx20mm) 400mmx400 mmx12mm 24"x24"x3/4"(610mmx610mmx20mm) bigger slab, 60cmx thickness like25mm, 30mm is also available, depends on customers' requirement Details pls feel free to contact us , thanks