A polished slice of agate (a variety of chalcedony) with concentric banding which is artificially coloured. From Uruguay. | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / NATURAL HISTORY MUSEUM,LONDON |
Bildgröße: | 5616 px × 3744 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |