A blue and purple accordion-style or cone-shaped stained glass lamp shade, likely in an Art Deco or Tiffany style. Design Details Material: Hand-cut opalescent and iridescent stained glass soldered with lead/metal came in shades of blue, white, and violet. Shape: Conical, pleated, accordion-style pattern featuring a zig-zag geometric band of deep cobalt blue accents around the middle. Fitter: Metal ring opening at the top designed to attach to a lamp fixture or harp.