The Czech couple Stanislav Libensky and Jaroslava Brychtova have become the world's leading glass artists over the last 40 years. They have transformed glass into a new substance they call "color in space." Made from clear or colored glass, their sculptures and other objects interact with light to create spectacular optical effects. This major monograph is the first comprehensive documentation of Libensky and Brychtova's unparalleled creations. Offering a critical and historical survey of their work, the book includes illustrations of Brychtovas pate de verre of the late 1940s, Libensky's early enameled glasses and tableware designs, and the collaborative sculpture and architectural commissions that began in the 1950s and continue to the present day.