Section 13 Articles of stone, plaster,cement,asbestos, mica or similar materials; ceramic products; glass and glassware 68 Articles of stone, plaster, cement, asbestos, mica or similar materials 68 04 Millstones, grindstones... of natural stone..., for grinding, etc 68 04 21 Millstones, etc, of agglomerated synthetic or natural diamond Commodity Code Description 68 04 21 00 Millstones, etc, of agglomerated synthetic or natural diamond
