Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.93.95-4.10
1
7.18
👆🏻
Fracture
Fibrous
Uneven
Cleavage
[010] Perfect, [100] Distinct, [011] Distinct
None
Mohs Hardness
2-9999
2
10
👆🏻
Chemical Composition
Amethyst, Clear Quartz, Smoky Quartz, Cacoxenite, Rutile, Geothite, Lepidocrocite
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)