Explanatory notes
… (including square) shape. In the form of granules, chippings or powder, they fall in heading 25.17 . Blocks, … have been further worked, i.e., bossed, dressed with the pick, bushing hammer or chisel, etc., sand‑dressed, ground, … marks of the tools used to separate them (crowbars, wedges, picks, etc.). This subheading also covers unshaped stone …