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 |
3.42ct (PA1608)
2.73ct (PA1607)
1.35ct - 8x6mm (PA1606)
1.96ct - 8x6mm (PA1605)
1.90ct (PA1603)
5.83ct (PA1602)
4.56ct (PA1601)
3.24ct (PA1597)
2.03ct (PA1595)
5.20ct - 11x9mm (PA1593)
3.98ct - 11mm (PA1592)
0.21ct (PA1590)
2.99ct (PA1587)
15.01ct - 14mm (PA1586)
9.69ct (PA1585)
3.00ct - 10x8mm (PA1582)
6.74ct (PA1580)
6.88ct (PA1577)
3.47ct (PA1576)
7.41ct - 13mm (PA1572)
102.46ct - 28x26mm (PA1571)
101.67ct (PA1570)
4.80ct - 11x9mm (PA1564)
1.57ct (PA1562)