0 6802.29 Monumental or building stone and articles thereof, simply cut or sawn, with a flat or even surface (excl. calcareous stone, granite and slate, with a completely or partly planed, sand-dressed, coarsely or finely ground or polished surface, tiles, cubes and similar articles of subheading 6802,10, setts, curbstones and flagstones) 35 22 18 15