Moonstone gemstones. This orthoclase mineral (sodium potassium aluminium silicate) has been shaped and polished to produce semi-precious gemstones. It belongs to the feldspar group of minerals,which are related due to symmetry and composition. Feldspars make up 60% of the earth's outer crust. Moonstone is named due to its moon-like glow. This occurs due to the phenomenon known as adularescence,which results from the refraction of light between internal layers before exiting the crystal | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Wiersma, Dirk |
Bildgröße: | 5138 px × 3425 px |
Modell-Rechte: | nicht erforderlich |
Eigentums-Rechte: | nicht erforderlich |
Restrictions: | - |