Blue John specimen. Blue John is a compact banded variety of fluorite found only in Castleton,Derbyshire,UK | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Natural History Museum, London |
Bildgröße: | 4620 px × 3782 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |