Ruby in zoisite. Polished specimen showing rough rubies (purple) enclosed in a matrix of zoisite (green). Ruby is a red-coloured variety of the mineral corundum,a crystalline aluminium oxide mineral. It is very hard,so used as an abrasive in industry,and clear samples can be cut into ornamental stones. Zoisite is a silicate of calcium and aluminium. This specimen,from Longida,Tanzania,measures 33 centimetres tall | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 3628 px × 5221 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |