and waste of these products 0.15% 0508 coral and similar materials, unworked or simply prepared but not otherwise worked; shells of molluscs, crustaceans or echinoderms and cuttle-bone, unworked or simply prepared but not cut to shape, powder and waste thereof 0.15% 0509 omitted 0510 ambergris, castoreum
and waste of these products 0.15% 0508 coral and similar materials, unworked or simply prepared but not otherwise worked; shells of molluscs, crustaceans or echinoderms and cuttle-bone, unworked or simply prepared but not cut to shape, powder and waste thereof 0.15% 0509 omitted 0510 ambergris, castoreum...
https://chemexcil.in/images/csnt952018(Schedule2018).pdf