Quartz crystals coated with pink topaz crystals
Numéro d’image : 11741907
| Crystals of white quartz coated with crystals of pinkish-brown topaz. Quartz (silicon oxide) is colourless when pure,but the presence of impurities can give a range of colours including white,pink,yellow,blue,green and smoky brown. Topaz is a silicate of aluminium and fluorine and also occurs in a range of colours including yellow,blue,green,violet,reddish-brown and colourless. Clear or finely-coloured varieties are used as gemstones. This specimen measures 15 x 11 cm and was found in Piraja's Mine,Brumado,Brazil | |
| Licence : | Droits gérés |
| Crédit: | Science Photo Library / De Gugliemo, Roberto |
| Taille de l’image : | 3780 px × 4713 px |
| Model Release : | Non requis |
| Property Release : | Non requis |
| Restrictions : | - |
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