... granite, marble, sandstone, travertine, limestone, etc.)Stair typeStraight stairs ,spiral stairs ,arc stairs Popular stone for steps granite:G603,G636 ... absolute black,tiger skin red,tiger skin yellow,shandong white,guilin red,CD green,emerald pearl,blue pearl,indian ... red,etc.marble:landscape white,east white,jade white,dark emperador,light emperador,black and white,bursa beige,moca beige,sunny ...