Lapis lazuli. Specimen of lapis lazuli (sodium calcium aluminium silicate sulphur sulphate) with one polished face. Lapis lazuli is a rock containing the mineral lazurite,which gives it a deep blue colour,and also flecks of the golden-yellow mineral pyrite (iron sulphide). This specimen is from Persia | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Natural History Museum, London |
Taille de l’image : | 2506 px × 3486 px |
Model Release : | Non requis |
Restrictions : | - |