Mineral | Tourmaline (Elbaite) |
---|---|
Chemistry | Na(Li1.5,Al1.5)Al6Si6O18(BO3)3(OH)4 |
Color | Green - Blue |
Refractive Index | 1.624 - 1.644 |
Birefringence | 0.018 - 0.040 |
Specific Gravity | 3.06 |
Mohs Hardness | 7.0 - 7.5 |
1.52ct (PA1003)
1.17ct - 6mm (PA1002)
1.73ct (PA1001)
7.87ct - 15x13mm (PA0999)
0.98ct - 6mm (PA0993)
0.61ct - 6x4mm (PA0991)
0.87ct - 7x5mm (PA0989)
0.35ct (PA0987)
0.37ct - 6x4mm (PA0986)
6.30ct (PA0985)
1.15ct - 8x6mm (PA0984)
1.06ct - 8x6mm (PA0983)
1.48ct (PA0946)
2.31ct (PA0927)
2.90ct (PA0926)
2.20ct - 9x7mm (PA0925)
3.07ct - 9mm (PA0924)
3.81ct (PA0923)
3.22ct (PA0922)
8.40ct (PA0921)
10.40ct - 14x12mm (PA0920)
8.49ct (PA0919)
9.22ct (PA0918)
40.61ct - 21x19mm (PA0917)