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 05 NOT CUT TO SHAPE OR SEWN OR OTHERWISE MADE UP. 68 05 30 NATURAL/ART. ABRASIVE POWDER/GRAIN, ON A BASE OF OTHER MATERIALS Commodity Code Description 68 05 30 00 NATURAL/ART. ABRASIVE POWDER/GRAIN, ON A BASE OF OTHER MATERIALS