Amethyst. Cut and polished crystals of amethyst,a precious form of quartz. The pale lilac to deep purple colour of amethyst is caused by the presence of traces of iron or manganese. It is often used in jewellery,especially in rings. Amethyst deposits occur in Europe,the USA,South America,and Africa | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Schneider, Mark A. |
Bildgröße: | 5093 px × 3364 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: |
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