Aquarium gravel, aquarium sand, aviaries not of metal, bird baths made of concrete, clay or other non-metallic substance; bricks, busts made of stone, concrete or marble; cast stone garden and household ornaments, ceramic enamel tiles, ceramic tiles, concrete blocks, decorative aquarium stones, desktop statuary made of stone, concrete marble; earthenware tiles, figurines of stone, concrete or marble; fireplace bricks, fireplace mantels, non-metal fireplace surrounds, flagstones, gazebos not primarily of metal, glass blocks for building, glass tiles, granite, grave markers of stone, concrete or marble; limestone, mantels for fireplaces made of wood, plaster or stone; marble, monuments of stone, concrete or marble; non-metal chimneys, non-metal doorknockers, non-metal floor tiles, non metal gates and fencing, non-metal lattices, non-metal roofing panels, non-metal roofing tiles, non-metal trellises, non-metal wainscoting, pavement tiles, paver tiles, pavers, paving blocks, paving stones, paving tiles, quartz, sculptures made of cement, marble or stone; slate, stained glass windows, statuettes made of stone, concrete or marble; stone for building and construction, stones, stucco tiles, tiles of clay, glass, gypsum, ceramic or earthenware for wall, floor or ceiling; tombstones of stone, concrete or marble; non-metal wall tiles