Single crystal sapphire possesses a unique combination of excellent optical, physical and chemical properties. Its properties depend on crystallographic direction (relative to the optical C-axis). Maximum available size for windows, lenses and blanks made of high purity optical grade single Kyropulos grown Sapphire:250 mm Dia x 120 mm Thk and 175 mm Square x 120 mm Thk. ---------------------------------------------- Optical components including: Windows, lenses, prisms, mirrors, filters, substrates, wedges for ultraviolet, visible and infrared spectral regions made from KBr, NaCl, KCl, CsI, CaF2, BaF2, LiF, MgF2, ZnSe, Sapphire, SI, Ge, optical glasses, Astrosital and Fused Silica. We produce both blanks and polished details with optical coating as well. We make 100% input control of all raw material we use in the production of our details. Our products have certificates of quality. We have special equipment for quality control of the details.