Rubicon Technology, Inc. is an advanced materials provider specializing in monocrystalline sapphire for applications in optical and industrial systems. It provides optical and industrial sapphire products and materials in a variety of shapes and sizes. Its optical sapphire products are used in equipment for a variety of end markets and high-performance applications, including defense and aerospace, specialty lighting, instrumentation, sensors and detectors, semiconductor process equipment, electronic substrates, medical and laser applications. Sapphire is utilized in optical and industrial applications. Its principal customers include defense subcontractors, industrial manufacturers, fabricators and resellers. It manages its operations and ships from its own facility located in Bensenville, Illinois. It sells its products on a global basis to customers in North America, Europe and Asia. It markets and sells through its direct sales force to customers.