Deep amethyst tinted and colorless glass sheets; laminated, blown, polished. Irregular hexahedron shape distorted by central bubble; form composed of six amethyst and three colorless sheets of flat glass, fused, alternating clear and amethyst; colorless sheets project slightly beyond amethyst tinted sheets forming ribs on three sides of sculpture; bubble located at one end of object, breaking through surface and extending towards center; top rim opening of bubble polished; bubble pushes out and distorts surface of two sides of object; signed on one side near base "Patti 1980"; polished base.