Rubicon Technology, Inc. is a vertically integrated, materials provider specializing in monocrystalline sapphire for applications in optical and industrial systems. The Company's segments include sapphire and pharmacy businesses. It designs, assembles and maintains its own crystal growth furnaces to grow sapphire crystals. It uses its crystal growth technology to produce sapphire products. It offers optical and industrial sapphire products in a variety of shapes and sizes, including round and rectangular windows, blanks, domes, tubes and rods. These optical sapphire products are used in equipment for a variety of end markets and applications, including defense and aerospace, specialty lighting, instrumentation, sensors and detectors, semiconductor process equipment, electronic substrates, medical and laser applications. Its product lines include sapphire windows and thin, double-side polished windows and substrates. Its facility is located in Bensenville, Illinois.