Jaroff Design, combining our expertise in custom glass and metal fabrication, conceived this striking glass stair in conjunction with the project architect who wanted a complex, twisting staircase as the dramatic connector between the two-floor duplex. Elaborating from a general sketch, we engineered a spiral glass stair with a very minimal support structure and stringer that unwinds as it descends. In order to meet budgetary, structural and aesthetic needs, we developed a new pallet of colors for the stainless steel and custom glass components. Using a blackening patina on the stainless steel instead of the originally requested dark bronze kept the project from going far over budget and necessitating additional support that would have ruined the elegant simplicity of the final design. Heightening this coloration, we suggested a smoke-laminated glass for the railings, creating a unity of color and form.