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 |
1.06ct - 8x6mm (PA0983)
1.37ct (PA0966)
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)
1.23ct (PA0884)
0.89ct - 7x5mm (PA0883)
2.97ct (PA0878)
3.49ct - 11x9mm (PA0877)
7.15ct (PA0876)
0.57ct - 6x4mm (PA0864)
0.54ct (PA0862)
1.55ct (PA0847)
0.46ct - 6x4mm (PA0846)
1.26ct (PA0845)