Belgian blue limestone tiles: Belgian blue limestone is one of the most durable natural stone materials available in our range. It is available in a number of finishes including with a honed, smooth surface and also an aged finish. All feature subtle fossils throughout and can be used for floors and walls. This Belgian limestone can also be supplied in mosaics, slab and large-format tiles. Bespoke items including staircases and skirting can also be created.