| General Information | ||||||
|---|---|---|---|---|---|---|
| A variety or type of: | Quartz | |||||
| Chemical Formula |
| |||||
| Physical Properties of Rutilated Quartz | ||||||
| Mohs Hardness | 7, Gemmological Tables (2004) | |||||
| Specific Gravity | 2.65, Gemmological Tables (2004) | |||||
| Cleavage Quality | None, Gemstones (2009) | |||||
| Fracture | Conchoidal, Gems, Sixth Edition (2006) | |||||
| Refractive Index | 1.544 to 1.553, Gemmological Tables (2004) | |||||
| Optical Character | Uniaxial/+, Gemmological Tables (2004) | |||||
| Birefringence | 0.009, Gemmological Tables (2004) | |||||
| Dispersion | Fatal error: Uncaught mysqli_sql_exception: Illegal mix of collations (latin1_swedish_ci,IMPLICIT) and (utf8mb3_general_ci,COERCIBLE) for operation '=' in /var/www/gemdat/gemshow_class.php:690 Stack trace: #0 /var/www/gemdat/gemshow_class.php(690): mysqli->query() #1 /var/www/gemdat/gemshow_class.php(505): gemshow_class->showdata() #2 /var/www/gemdat/gemshow_class.php(1469): gemshow_class->showblock() #3 /var/www/gemdat/gshow.php(151): gemshow_class->do_optical() #4 {main} thrown in /var/www/gemdat/gemshow_class.php on line 690 | |||||