Class IV: Oxides

From The Gemology Project
Jump to: navigation, search
Class IV Oxides
Anatase TiO2
Brookite TiO2
Chrysoberyl BeAl2O4
Corundum Al2O3
Hematite Fe2O3
Opal SiO2nH2O
Quartz SiO2
Rutile TiO2
Spinel MgAl2O4