2515            |    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 (including square) shape.
2515.11.00     -- Crude or roughly trimmed
2515.12.00     -- Merely cut, by sawing or otherwise, into blocks or slabs of a rectangular (including square) shape
2515.20.00   - Ecaussine and other calcareous monumental or building stone;