... available 3.finished:polished,honed,tumbled,antiqued,etc 4.Color:Grey Black Blue Enjoy Stone -- The original basalt quarry and well-equipped ... !!! Natural Basalt Stone MosaicMaterialBasalt, Basalto, Bluestone, Volcanic Stone, Lava stoneColorGrey, Black ,BlueDimensionsize: 300*300MM, 305*305MM(12" * 12"), Thinkness:7mm,10mmor ...