Sapphire
Crystallographic characteristics Al2O3 (sapphire - synthetic corundum)
Optical characteristics Al2O3 (sapphire - synthetic corundum))
Thermo-physical characteristics Al2O3 (sapphire - synthetic corundum)
Mechanical characteristics Al2O3 (sapphire - synthetic corundum))
Chemical characteristics Al2O3 (sapphire - synthetic corundum)
