Corundum and aluminium oxide. Corundum specimen and powdered aluminium oxide (Al2O3) in a watch glass. Corundum mineral is a crystalline form of aluminium oxide, with typically some impurities. It is defined to have hardness of 9 in the Mohs scale. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5161 px × 3438 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |