Go to Homepage
[Subject: Mineralogy]
- A precious stone occurring in hexagonal crystals, of which emerald and aquamarine are varieties
Translated in 33 languages
[Subject: Generalities]
Translated by: FARHAD PEZESHKI
Translated in 2 languages
- Be3Al2Si6O18
Translated in 1 languages
[Subject: Geology, Meteorology, Hydrology]