... 3.Surface finishing:Honed first, then tumb Natural Blue Limestone 1.Product information (1)Material : Blue Limestone (2)Finish: polished, honed, flamed, brushed, sand ... .Company informationThe main products contain: granites, marbles, blue limestones , slates, sandstones, thin plates, big-size slabs, special shaped slabs, natural slabs, mosaicas ...