| Chapter Code | Chapter Description |
|---|
| 251511 | CRUDE OR ROUGHLY TRIMMED |
| 251512 | MARBLE AND TRAVERTINE: MERELY CUT, BY SAWING OR OTHERWISE, INTO BLOCKS OR SLABS OF A RECTANGULAR (INCLUDING SQUARE) SHAPE |
| 251520 | ECAUSSINE AND OTHER CALCAREOUS MONUMENTAL OR BUILDING STONE; ALABASTER |
| 251611 | GRANITE : CRUDE OR ROUGHLY TRIMMED |
| 251612 | GRANITE : MERELY CUT, BY SAWING OR OTHERWISE, INTO BLOCKS OR SLABS OF A RECTANGULAR (INCLUDING SQUARE) SHAPE |
| 251620 | SANDSTONE |
| 251690 | OTHER MONUMENTAL OR BUILDING STONE |
| 251710 | PEBBLES, GRAVEL, BROKEN OR CRUSHED STONE, OF A KIND COMMONLY USED FOR CONCRETE AGGREGATES, FOR ROAD METALLING OR FOR RAILWAY OR OTHER BALLAST, SHINGLE AND FLINT, WHETHER OR NOT HEAT-TREATED |