... ; interior white marble staircase materialgranite,marble ,sandstone,travertine,limestone,etc.popular stone for stepsgranite:G603,G636,G664,G687,G654,G562 ... red,CD green,emerald pearl,blue pearl,indian red,etc.marble:landscape white,east white,jade white,dark emperador ... black and white,bursa beige,moca beige,sunny beige,etc.finishpolished,honed,bush hammered, sandblasted or customized.edgeflat polished ...