Gelest, Inc. is a supplier of commercial and research quantities of organosilicon, tin, and germanium compounds as well as metal alkoxides, metal diketonates, and silicones. The firm manufacture metal-organics including germanium-organics for IR optics and GRIN optics; SOL-GEL intermediates for high-refractive index coatings; tungsten-organics for electro-chromic displays and rare earth-organics for lasers.