This is a geographical list of natural stone used for decorative purposes in construction and monumental sculpture produced in various countries.
The dimension-stone industry classifies stone based on appearance and hardness as either "granite", "marble" or "slate".
The granite of the dimension-stone industry along with truly granitic rock also includes gneiss, gabbro, anorthosite and even some sedimentary rocks.
and as raw block and monument stone for the funerary trade.
Iran has more than 250 kinds of marble, travertine, onyx, granite, and limestone.