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 |
3.87ct - 11x9mm (PA0706)
1.20ct (PA0695)
1.71ct (PA0693)
1.22ct (PA0658)
8.51ct - 14x12mm (PA0631)
5.11ct - 12x10mm (PA0622)
4.90ct (PA0616)
5.38ct - 11x9mm (PA0609)
0.71ct - 6x4mm (PA0583)
1.59ct (PA0575)
3.52ct (PA0531)
0.38ct - 6x4mm (PA0449)
18.04ct (PA0299)
5.44ct (PA0290)
4.62ct - 12x10mm (PA0285)
7.94ct - 14x12mm (PA0269)
37.26ct - 21x19mm (PA0253)
22.27ct (TG0132)
11.86ct (PA0126)
4.04ct (PA0121)
9.05ct (PA0120)
8.80ct (PA0119)
7.27ct (PA0117)
2.76ct (PA0076)