1.lightweight,high strength cobblestone 2.low water absorption, 3.good freeze resistance 4.ISO9001:2008, SGS 5.free samples cobblestoneCulture stone is lightweight and durable to real stone. Made from concrete, more specifically it is a mixture of Portland cement, lightweight but hi-quality of porcelain granule (ceramsite) and top pigments from, Germany. This simulated stone is made from molded ...