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 |
1.35ct - 8x6mm (PA1220)
0.30ct - 5x3mm (PA1216)
0.33ct (PA1215)
0.75ct (PA1213)
4.14ct (PA1212)
54.82ct - 24x22mm (PA1187)
10.53ct (PA1165)
4.05ct (PA1158)
7.67ct (PA1157)
14.91ct (PA1155)
13.42ct (PA1154)
4.86ct - 10mm (PA1148)
14.12ct - 16x14mm (PA1136)
36.79ct (PA1131)
12.89ct (PA1100)
7.21ct - 13x11mm (PA1099)
1.08ct (PA1095)
0.55ct - 5mm (PA1093)
0.64ct - 6x4mm (PA1092)
0.54ct - 5mm (PA1091)
0.98ct - 7x5mm (PA1089)
1.10ct - 7x5mm (PA1088)
1.12ct - 7x5mm (PA1087)
1.92ct - 8mm (PA1084)