Building and home remodeling materials, namely, natural and engineered stone, ceramic, glass, marble, quartz, granite and porcelain mosaics, tiles and slabs for use in building construction, countertops and flooring; building materials not of metal, namely, marble, granite, granite grit, glass grit, quartz, clay tiles and flooring, fireclay tiles; surfacing for roofs in the nature of slabs constituted from a mixture of marble, granite, granite grit, glass grit; tiles of granite grit, tiles of glass grit; boards and slabs of granite grit and glass grit for use in building; boards and slabs of marble for use in building; mosaics for building of ceramic, glass ceramic, granite and glass; refractory construction materials not of metal; mosaics made of natural stone and stone tile and glass mosaics for use in building construction; works of art of stone; floors not of metal; tiles not of metal for building; stone; artificial stone; calcareous stone; building stone; refractory stones; non-metal wall linings for use in building; stair-treads not of metal