Non-metallic building materials, namely, floor and wall tiles, slabs of natural stone, surrounds for fireplaces, gabions; monuments, not of metal; aquarium gravel; aquarium sand; balustrades; building stone; busts of stone, concrete and marble; clinker ballast; facings, not of metal, for building, namely, marble tiles and slabs; floor tiles, not of metal; floors, not of metal; grave and tomb enclosures, not of metal; gravel in all sizes and dimensions; lime building materials; limestone; marble and marble in block and slab form; memorial plaques of stone; architectural moldings, not of metal, for building; mosaics made of natural stone and stone tile for building; paving blocks, not of metal; window sills, not of metal; stair-treads, not of metal; staircases, not of metal; statues of stone, concrete and marble; statuettes of stone, concrete and marble; stone for building and construction; tiles, not of metal, for building; tomb slabs, not of metal; tomb monuments, not of metal; tombs, not of metal; tombstone plaques, not of metal; tombstone stelae, not of metal; tombstones of stone, concrete or marble; burial vaults, not of metal; synthetic wall claddings, not of metal, for building; wall linings, not of metal, for building; window frames, not of metal; works of art of stone, concrete and marble; works of art of stonemasonry