Turquoise mineral. Person holding a lump of unworked turquoise. This blue-green mineral is a form of hydrated copper aluminium phosphate. It has been used in jewellery since the time of the Ancient Egyptians | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5197 px × 3465 px |
Modell-Rechte: | nicht erforderlich |
Restrictions: | - |