... granite.slate 2. color: black, brown,green.white,yellow 3.surface: polish,honed Nature stone step stairswe can supply various of nature ... limestone, etc.)Stair typeStraight stairs ,spiral stairs ,arc stairs Popular stone for steps granite:G603,G636,G664,G687,G654,G562,G682 ... blue pearl,indian red,etc.marble:landscape white,east white,jade white,dark emperador,light emperador,black and white,bursa beige ...