Mineral | Tourmaline (Dravite) |
---|---|
Chemistry | NaMg3Cr6Si6O18(BO3)3(OH)3OH |
Color | Green - Vivid Green |
Refractive Index | 1.624 - 1.644 |
Birefringence | 0.018 - 0.040 |
Specific Gravity | 3.06 |
Mohs Hardness | 7.0 - 7.5 |
0.72ct (CT0360)
1.73ct (CT0359)
1.90ct - 9x7mm (CT0358)
1.62ct (CT0357)
1.65ct - 9x7mm (CT0356)
2.32ct (CT0355)
2.16ct - 9x7mm (CT0354)
1.98ct - 8mm (CT0353)
2.42ct (CT0352)
2.08ct - 9x7mm (CT0351)
2.28ct - 9x7mm (CT0350)
4.72ct - 9x7mm Pair (CT0349)
2.81ct (CT0348)
3.00ct (CT0347)
3.88ct - 10x8mm (CT0345)
5.82ct - 11mm (CT0344)
6.86ct (CT0343)
6.94ct (CT0342)
2.11ct - 9x7mm (CT0340)
1.70ct - 8x6mm (CT0339)
2.19ct (CT0338)
2.93ct (CT0337)
2.37ct (CT0336)
4.86ct (CT0335)