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 |
14.65ct - 15x13mm (PA1237)
18.37ct (PA1236)
13.40ct (PA1232)
0.85ct (PA1225)
0.92ct - 8x6mm (PA1222)
1.35ct - 8x6mm (PA1220)
0.42ct - 7x5mm (PA1217)
0.30ct - 5x3mm (PA1216)
0.33ct (PA1215)
0.75ct (PA1213)
4.14ct (PA1212)
0.57ct - 6mm (PA1210)
54.82ct - 24x22mm (PA1187)
10.53ct (PA1165)
4.05ct (PA1158)
7.67ct (PA1157)
14.91ct (PA1155)
4.86ct - 10mm (PA1148)
14.12ct - 16x14mm (PA1136)
36.79ct (PA1131)
11.22ct - 16x14mm (PA1107)
12.45ct - 15x13mm (PA1106)
12.89ct (PA1100)
7.21ct - 13x11mm (PA1099)