Agate (Silicon dioxide) specimen from Iberstein,Rhineland,Germany showing the growth rings following the cavity outline | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Natural History Museum, London |
Bildgröße: | 4180 px × 4180 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |