Section 05 Mineral products 25 Salt; sulphur; earths and stone; plastering materials, lime and cement 25 15 Marble, travertine, ecaussine and other calcareous monumental or building stone of an apparent specific gravity of 2.5 or more, and alabaster, whether or not roughly trimmed or merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (inc Commodity Code Description 25 15 11 Grude or roughly trimmed 25 15 12 Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including) 25 15 20 Ecaussine and other calcareous monumental or building stone;alabaster