
Linópolis, Divino das Laranjeiras, Minas Gerais, Brazil
1.00 carats
© Rarestone.com
| General Information | ||||||||||||||||||
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| Chemical Formula |
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| Brazilianite Treatments | ||||||||||||||||||
| This material has been reported to fade (Sinkankas, 1972) and to lose its greenish color completely on being heated above 140°C; irradiation did not reverse this change (Requardt et al, 1982) - Nassau (1984) | ||||||||||||||||||
| Physical Properties of Brazilianite | ||||||||||||||||||
| Mohs Hardness | 5.5, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Specific Gravity | 2.91 to 3.00, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Tenacity | Brittle, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Cleavage Quality | Perfect, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Fracture | Conchoidal, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Refractive Index | 1.602 to 1.625, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Optical Character | Biaxial/+, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Birefringence | 0.018 to 0.021, Blue Chart Gem Identification (2010) More from other references | |||||||||||||||||
| Pleochroism | The dichroism is insignificant, Gems, Sixth Edition (2006) More from other references | |||||||||||||||||
| Dispersion | Fatal error: Uncaught mysqli_sql_exception: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb3_uca1400_ai_ci,COERCIBLE) for operation '=' in /big/var/www/gemdat/gemshow_class.php:690 Stack trace: #0 /big/var/www/gemdat/gemshow_class.php(690): mysqli->query() #1 /big/var/www/gemdat/gemshow_class.php(505): gemshow_class->showdata() #2 /big/var/www/gemdat/gemshow_class.php(1469): gemshow_class->showblock() #3 /big/var/www/gemdat/gshow.php(151): gemshow_class->do_optical() #4 {main} thrown in /big/var/www/gemdat/gemshow_class.php on line 690 | |||||||||||||||||