The heading text explicitly excludes slate, which has its own dedicated heading covering worked slate and articles of slate or agglomerated slate. Importers of slate flagstones or curbstones should classify those goods under that separate heading rather than here.

Standard commercial entry documents apply: a commercial invoice, packing list, and bill of lading. Because stone products can be subject to antidumping or countervailing duty orders depending on the specific stone type and country of origin, importers should verify whether any AD/CVD orders cover their specific product and source country before filing entry.