|
| R.I. :
1.624(+.005, -.005) - 1.644(+.006, -.006)
|
Hardness :
7-7.5 |
| Chemical Comp. : |
(NaCa)(LI,MgFe,Al)9B3Si6(O,OH)31
|
| Density : |
3.06 (.05, +.15)
|
| Crystal Group : |
Hexagonal
|
Chrome Tourmalines are bright green and attractive. They obtain their chrome color due to the presence of chromium or vanadium in the gem.
|
|
|
|
