Gemstones : sapphire.
Chemicals : Calcium Fluoride, Potassium Bromide.
Laser Crystals, Nd, YAG, Cr:YAG, Yb, YAG, YVO4, Magneto-Optical Crystals, TGG, TSAG, Scintillation Crystals, CE, LUAG, CE, GAGG, Nonlinear Crystals, LBO, BBO, KTP, Piezoelectric Crystals, LINBO3, Quartz, Optical Windows, K9, Quartz.