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 |
51.30ct - 23x21mm (PT1424)
4.36ct - 11x9mm (PA1915)
3.16ct - 10x8mm (PA1914)
1.65ct (PA1913)
3.06ct (PA1912)
1.86ct - 9x7mm (PA1910)
3.13ct (PA1909)
3.06ct - 10x8mm (PA1908)
3.67ct (PA1907)
5.53ct (PA1905)
4.22ct (PA1903)
7.96ct - Pair (PA1902)
6.36ct (PA1901)
8.07ct (PA1898)
7.46ct (PA1896)
8.17ct - Pair (PA1895)
15.88ct - 17x15mm (PA1894)
8.20ct (PA1893)
7.30ct (PA1892)
10.85ct - 15x13mm (PA1891)
13.80ct (PA1889)
6.87ct - 13x11mm (PA1888)
0.76ct (PA1887)
3.06ct - 10x8mm (PA1879)