Alexandrite (Laser) BeAl2O4:Cr3+
Aluminium & Magnesium Oxide / Spinell 1 Al2O3* 1 MgO or 3,5 Al2O3* 1 MgO MgAl2O4:Co2+
Aluminium Oxide α-Al2O3
Anatase crystals (natural) TiO2
Barium fluorid BaF2
Barium Titanate BaTiO3
Beryllium Aluminate BeAl6O10:Cr3+
Beta-Barium Borate ß-BaB2O4
Bismuth Silicate &
Bismuth Germanate		 BSO &
BGO
Bournonite PbCu [SbS3]
Brookite TiO2
Cadmium Selenide CdSe
Cadmium Sulfide CdS
Cadmium Telluride CdTe
Cadmium Tungstate CdWO4
Calcite Calcium Carbonate CaCO3
Calcium Fluoride CaF2
Calcium Neodymium Aluminate CaNdAlO4
Calcium Tungstate CaWO4
Cassiterite SnO2
Cerium (1V) oxide CeO2
Chromium doped Forsterite Cr : Mg2SiO4
Chromium doped Yttrium Aluminum Garnet Cr4+:YAG
Cobalt (II) Oxide CoO
Crystalline Quartz SiO2
Cuprite single crystal (natural) Copper oxide Cu2O
Dolomite - Calcium Magnesium Carbonate CaMg(CO3)2
Ferberite ( Fe++WO4 ) FeWO4
Forsterite Mg2SiO4
Franklinite ZnFe2O4
Gallium Arsenide Semi-Insulating (VB)
Gallium Arsenide Semi-Conducting ( HB/VB )
Gadolinium Gallium Garnet doped Gd3Ga5O12
Gadolinium Gallium Garnet (GGG)
Subsituted Gadolinium Gallium Garnet (SGGG)
Gd3(Mg, Zr) Ga5O12
Gallium Phosphide ( LEC ) n-type ( GaP:S, GaP:Te )
Germanium Ge
Goethite - Alfa iron oxy Hydroxide α-FeO(OH)
Hematite single crystal (Natural)
Fe2O3
Indium Antimonide InSb
Indium Arsenide InAs
Indium Phosphide InP
Langasite La3Ga5SiO14
Lanthanum Aluminate
LaAlO3
Lanthanum Beryllate La2Be2O5
LanthanumStrontiumAluminumTantalumOxide LSAT
Led Molybdate PbMoO4
Lepidocrocite - Gamma iron oxy Hydroxide γ-FeO(OH)
Lithium Aluminium Oxide LiAlO3
Lithium Fluoride LiF
Lithium Gallate & Lithium Aluminate LiGaO2 & LiAlO2
Lithium Iodate LiIO3
LiNbO3
Lithium Tantalate LiTaO3
Lithium Triborate LiB3O5, LBO
Magnesite - Magnesium Carbonate MgCO3
Magnesium aluminium spinell 1MgO 3Al2O3:Co Co doped (blue)
Magnesium Fluoride MgF2
Magnesium Oxide MgO
Magnetite single crystal Fe3O4
Manganese (II) Oxide MnO
Neodymium doped Yttrium Aluminum Garnet Nd:YAG
Neodymium doped Yttrium Orthovanadate Nd:YVO4
Neodymium Gallate NdGaO3
Nickelum Oxide  
Potassium bromide KBr
Potassium chloride KCl
Potassium Dideuterium Phosphate
Potassium Dihydrogen Phosphate
(KDP, DKDP or KD*P) KH2PO4  KD2PO4
Potassium Niobate KNbO3
Potassium Tantalate Single Crystals KTaO4
Potassium Titanyl Phosphate KTiOPO4, KTP
Pyrite FeS2
Siderite - Iron Carbonate FeCO3
Silicon Carbide SiC
Silicon Dioxide SiO2
Silicon Si
Silver Gallium Sulfide / Silver Gallium Selenite AgGaS2 / AgGaSe2
Sodium Chloride NaCl
Sodium Fluoride NaF
Strontium Lanthanium Aluminate SrLaAlO4
Strontium Lanthanium Gallate SrLaGaO4
Strontium Titanate SrTiO3
Tellurium Oxide TeO2
Terbium Gallium Garnet TGG
Titanium dioxide TiO2
Titanium doped Sapphire Crystal Ti:Sapphire
Vivianite Fe3(PO4)2*8H2O
Ytterbium,  doped Yttrium Aluminum Garnet Yd:YAG
Yttrium Aluminium Perowskite YAP (YAlO)
Yttrium Orthosilicate single crystal YOS,YSO: Y2SiO5
Yttrium Vanadate YVO4
Yttrium-Aluminum-Garnet Y3Al5O12
Zinc Oxide ZnO
Zinc Selenide ZnSe
Zinc Sulfide ZnS
Zinc Telluride ZnTe
Zirconium Oxide (Y2O3) Stabilized with 9.5 mol%