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 |
4.26ct - 12x10mm (PA1658)
0.47ct (PA1655)
1.49ct (PA1654)
2.42ct (PA1653)
0.83ct - 7x5mm (PA1644)
1.80ct (PA1643)
2.78ct (PA1641)
2.29ct - 9mm (PA1640)
2.07ct - 8mm (PA1639)
2.03ct - 8mm (PA1637)
3.18ct - 11x9mm (PA1636)
2.11ct - 9x7mm (PA1625)
2.96ct (PA1624)
2.32ct - 9x7mm (PA1623)
1.29ct (PA1622)
12.75ct (PA1621)
0.51ct - 6x4mm (PA1620)
3.09ct - 8x6mm (PA1619)
9.03ct (PA1616)
7.73ct (PA1615)
7.03ct - 13x11mm (PA1613)
1.75ct - 9x7mm (PA1612)
12.13ct - 15x13mm (PA1611)
1.36ct (PA1609)