Blue John vase. Vase made from blue John,a compact banded variety of fluorite (calcium fluoride) found only in Castleton,Derbyshire,UK | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Natural History Museum, London |
Taille de l’image : | 2115 px × 4132 px |
Model Release : | Non requis |
Property Release : | Non requis |
Restrictions : | - |