Natural stone, porcelain, and glass materials for building and construction; natural stone, porcelain, and glass slabs and tiles; limestone, porcelain, and glass tiles; onyx, quartz, and porcelain slabs; construction materials made primarily of natural stone, porcelain, and glass materials; natural stone, namely, granite, marble, quartzite, limestone, onyx, schist, soap stone, quartz, and travertine