Aquamarine
Refractive Index |
1.570 to 1.592 |
Birefringence |
0.005 to 0.009 |
Dispersion |
0.014 |
Specific Gravity |
2.66 to 2.80 |
Transparency |
Transparent |
Pleochroism |
Weak to moderate |
Fluorescence |
Inert |
Optical Character |
Uniaxial - |
Cleavage |
Imperfect to Indistinct |
Fracture |
Conchoidal |
Lustre |
Vitreous |
Mohs Hardness |
7.5 to 8 |