Be3Al2Si6O18 (Fe bearing)Hexagonal
Aquamarine
Be3Al2Si6O18 (Fe bearing)
SilicatesChemical FormulaBe3Al2Si6O18 (Fe bearing)
Crystal SystemHexagonal
Mohs Hardness7.5
Specific Gravity2.7
ColorBlue, blue-green
LusterVitreous
StreakWhite
CleavageOne direction
FractureConchoidal
Occurrence
Blue variety of beryl colored by iron. Found in granite pegmatites.