Silicon (Si) including SOI Platinized (Platinum coated) Silicon Wafers Solar Grade Silicon Wafer (156mm x 156mm) GaAs (Single Crystal) Germanium (Ge) Schott Borofloat 33 Lithium Niobate (LiNbO3) Single Crystal Quartz (ST and X-cut) Wafers are available in various sizes, and thicknesses. Ge Wafers  LiNbO3Wafers-SAW   PlatinizedSiWafers