The range of Interior natural stone tiles available is quite staggering. Stone tiles can be imported from all over the world, but the majority come from Turkey, Brazil, Italy, Portugal, & China. Turkey has extensive deposits of Travertine & Limestone, while Brazil is famous for its slate. Portugal is a big producer of granite & limestone while China, well China produces just about everything. China is such a big country that there are many more different variants of natural stone still to be discovered there. The only thing that is certain is that the range of interior stone tiles available is certain to get bigger and bigger.