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 |
5.52ct - 12x10mm (PA1735)
8.09ct (PA1728)
3.76ct - 9mm (PA1726)
2.26ct - 8mm (PA1722)
6.47ct (PA1721)
63.81ct (PA1714)
5.52ct (PA1712)
5.44ct (PA1711)
13.62ct (PA1661)
2.11ct - 9x7mm (PA1625)
2.96ct (PA1624)
2.32ct - 9x7mm (PA1623)
1.29ct (PA1622)
12.75ct (PA1621)
9.03ct (PA1616)
7.73ct (PA1615)
7.03ct - 13x11mm (PA1613)
1.75ct - 9x7mm (PA1612)
12.13ct - 15x13mm (PA1611)
1.36ct (PA1609)
3.42ct (PA1608)
2.73ct (PA1607)
1.35ct - 8x6mm (PA1606)
1.96ct - 8x6mm (PA1605)