Corundum specimen. Corundum (aluminum oxide, Al2O3) specimen. Corundum is defined to have hardness of 9 in the Mohs scale. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Giphotostock |
Taille de l’image : | 5160 px × 3434 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |