HSN Code HSN Description. 25059000 Natural sands of all kinds, whether or not coloured, other than metal-bearing sands of chapter 26 other. 25171010 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; macadam of slag, …