Section 05 Mineral products 25 Salt, sulphur; earths and stone; plastering materials, lirne and cement 25 13 Pumice stone; emery; natural corundum, natural garnet and other natural abrasives, wh 25 13 11 Pumice stone, crude or in irregular pieces, (incl. crushed pumice) 25 13 11 00 Pumice stone, crude or in irregular pieces, (incl. crushed pumice) Commodity Code Description 25 13 11 00 00 Pumice stone, crude or in irregular pieces, (incl. crushed pumice)