Beryllium Aluminate Cr3 doped
BeAl2O4:Cr3+
Chemical name
Beryllium Aluminate Cr3 doped |
Mineral name
Alexandrite (Laser) |
Chemical formula
BeAl2O4:Cr3+ |
Melting point [°C]
1870 |
Crystal system
orthorhombic |
Space Group
Pnma |
Unit cell
a [Å]:5.47 b [Å]:9.39 c [Å]:4.42 |
Molecular weight [g/mol]
126.97 |
Mohs hardness
8.5 |
Density [g/cm3]
3.79 |
Color
green (for daylight), red (for artificial lightning) |
Optical character
biaxial |
Refractive Index
ng=1.753; nm=1.747; np=1.744 |
Doping [%]
0.3 - 1.0 |