Explanatory notes
… of mineral oxides (coloured veined marble, onyx marble, etc.), but there are pure white varieties. Travertines are … chippings or powder, they fall in heading 25.17 . Blocks, etc., which have been further worked, i.e., bossed, dressed with the pick, bushing hammer or chisel, etc., sand‑dressed, ground, polished, chamfered, etc., are …