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 |
0.82ct - 6mm (PA1364)
1.68ct (PA1363)
1.22ct - 8x6mm (PA1359)
3.41ct - 12x10mm (PA1349)
0.99ct - 8x6mm (PA1348)
3.56ct (PA1347)
3.49ct (PA1346)
1.55ct - 7mm (PA1345)
2.58ct - 10x8mm (PA1343)
2.24ct (PA1342)
2.46ct (PA1341)
2.41ct (PA1340)
2.90ct (PA1339)
7.41ct - 14x12mm (PA1338)
10.80ct (PA1336)
4.19ct (PA1333)
1.14ct (PA1328)
3.54ct (PA1326)
2.96ct (PA1323)
0.99ct - 6mm (PA1322)
7.82ct (PA1321)
7.01ct (PA1319)
5.37ct (PA1317)
21.86ct (PA1316)