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 |
4.19ct (PA1333)
1.14ct (PA1328)
3.54ct (PA1326)
2.96ct (PA1323)
0.99ct - 6mm (PA1322)
7.82ct (PA1321)
8.25ct (PA1320)
7.01ct (PA1319)
5.37ct (PA1317)
21.86ct (PA1316)
9.33ct (PA1315)
31.90ct (PA1314)
4.59ct - 11x9mm (PA1312)
60.44ct - 24mm (PA1311)
55.51ct (PA1310)
9.00ct (PA1309)
3.06ct - 11x9mm (PA1305)
27.39ct (PA1289)
39.20ct (PA1287)
37.75ct - 22x20mm (PA1265)
4.86ct (PA1245)
5.42ct - 11mm (PA1243)
6.48ct (PA1242)
9.79ct (PA1239)