... , Countertop, Stair, Step, Riser 2. color and size as per client's custom white granite step stone stairs Granite Marble Stone Step Granite step, Granite ... stairs, Granite riser, Chinese granite stepstone, marble step, marble stair, marble riser, stone step 1)Step size: 110-150x33x3cm 2)Riser: 110-150x14-15x2cm ...