Amethyst geode. Close-up of a geode cut open to reveal amethyst crystals inside. Amethyst is a violet variety of quartz. Specimen from Madagascar. | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Goetgheluck, Pascal |
Taille de l’image : | 7241 px × 4827 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |