◊ Sapphire ◊ ZnSe ◊ ZnS ◊ CdSe ◊ CdS ◊ ZnTe ◊ CVD ZnSe ◊ CaF2 ◊ Bi2Te3 ◊ Bi2Se3 ◊ CdWO4 ◊ NaBi(WO4)2 ◊ Langasite & Langatate ◊ LiNbO3 ◊ Fused silica ◊ Silicon ◊ GaSe ◊ PbS, PbSe, PbTe ◊ KDP