Solid-glass stair treads and risers by ThinkGlass are cast in one solid piece from 100% recyclable glass with thicknesses ranging from 1-1/2" to 4". Each step has a textured, slip-resistant surface and the stairs are available in eight textures, two colors—crystal or aqua—and with polished, textured, or brushed edges. ThinkGlass designers can embed the steps with LEDs in eight different colors—including true white, cold white, amber, and red—to create a glowing effect. •