Crystal of blue Sapphire, a variety of mineral Corundum, aluminum oxide Al2O3 Stock Photo - Alamy
Sapphire (Al2O3)
Al2O3 - Sapphire Wafer 5x5x0.5 mm, A plane (11-20), 2 SP
Sapphire (Al2O3)
Sapphire is a precious gemstone, a variety of the mineral corundum, consisting of aluminium oxide Al2O3 with trace amo… | Precious gemstones, Gemstones, Crystals