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 |
13.06ct - 16x14mm (PA1830)
1.76ct (PA1829)
2.47ct - 10x8mm (PA1828)
2.20ct - 9mm (PA1827)
3.45ct (PA1826)
4.69ct (PA1825)
10.32ct (PA1824)
9.33ct (PA1823)
5.11ct (PA1819)
1.52ct - 9x7mm (PA1817)
2.93ct - 10x8mm (PA1816)
2.79ct - 10x8mm (PA1815)
3.72ct (PA1814)
6.65ct (PA1813)
7.45ct - 14x12mm (PA1808)
2.73ct - 10x8mm (MZ0360)
31.01ct (PA1752)
2.07ct - 9x7mm (PA1750)
0.70ct - 7x5mm (PA1749)
4.21ct - 10mm (PA1747)
2.59ct - Pair (PA1746)
2.52ct - 8x6mm Pair (PA1745)
3.58ct - 11x9mm (PA1744)
3.95ct (PA1743)