… cubes and the like, of natural stone (including slate), whether or not on a backing; artificially coloured granules, …
Explanatory notes
… cubes and the like, of natural stone (including slate), whether or not on a backing; artificially coloured granules, … has been further processed than mere shaping into blocks, sheets or slabs by splitting, roughly cutting or squaring, … stone in the forms produced by the stone-mason, sculptor, etc., viz. : (A) Roughly sawn blanks; also non-rectangular …