Section 13 ARTICLES OF STONE, PLASTER,CEMENT,ASBESTOS, MICA OR SIMILAR MATERIALS; CERAMIC PRODUCTS; GLASS AND GLASSWARE 70 Glass and Glassware. 70 18 GLASS SMALLWARES, ETC; GLASS MICROSPHERES =<1MM IN DIAMETER Commodity Code Description 70 18 10 Glass beads, imitation pearls, imitation precious or semi-precious stones and si 70 18 20 Glass microspheres not exceeding 1 mm in diameter 70 18 90 Other: