A mix of recycled glass and concrete makes up IceStone. The composite doesn't contain fillers, resulting in a product that looks and handles like natural stone but is less porous and more heat-resistant. Appropriate for vertical or horizontal applications, the 52½-inch-by-8-foot slabs can also be cut into large format tiles. Along with its standard 24 color options, the company offers custom color combinations for large orders. IceStone, 718.624.4900; www.icestone.biz.