... red granite, Columbus granite Products:Granite Stairs and Steps Sizes: Stair Tread: 110-160 x 30-33 x 2cmStair Riser: ... Materials: G series granite, import granite, marble,onyx,gemstones Finish:Stair Tread: Top polished, flamed or bushhammered. Edges bevelled and ... polished.Stair Riser: Top polished. Edges sawn cut.Colors: Black, Yellow, Grey ...