A close-up view of agate. Agate is a form of the mineral quartz (silicon oxide). The colors are due to metal ion impurities as the mineral formed | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Kinsman, Ted |
Taille de l’image : | 3750 px × 2500 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : |
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