... 3)Strong Package,Cheap Price 4)Fast Delivery Basalt Floor Tile Basalt has two color tones as Grey and Dark. And ... interior and exterior use,can be made into wall stone cladding,blindstone,tiles,flooring,stairs,window-sills,countertops, pavers,steps,kerbs ... etc.Usage:Black Basalt Can be made into wall stone cladding,blindstone,tiles,flooring,stairs,window-sills,countertops,pavers,steps. Payment ...