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 |
9.33ct (PA1315)
31.90ct (PA1314)
4.59ct - 11x9mm (PA1312)
60.44ct - 24mm (PA1311)
55.51ct (PA1310)
3.06ct - 11x9mm (PA1305)
27.39ct (PA1289)
39.20ct (PA1287)
159.71ct (PA1246)
4.86ct (PA1245)
5.42ct - 11mm (PA1243)
6.48ct (PA1242)
9.79ct (PA1239)
14.65ct - 15x13mm (PA1237)
18.37ct (PA1236)
6.55ct - 12x10mm (PA1227)
0.85ct (PA1225)
0.92ct - 8x6mm (PA1222)
1.35ct - 8x6mm (PA1220)
0.30ct - 5x3mm (PA1216)
0.33ct (PA1215)
0.75ct (PA1213)
4.14ct (PA1212)
54.82ct - 24x22mm (PA1187)