Tenacity
-
Brittle
Solubility
-
slightly water soluble and in hot hydrochloric acid
Durability
-
-
Specific Gravity
3.95-4.103.00-3.25
1
7.18
👆🏻
Fracture
Uneven
Subconchoidal, Uneven, ConchoidalWalter Schumann
Cleavage
None
Octahedral, perfect on {111}, parting on {011}
Mohs Hardness
-99994
2
10
👆🏻
Chemical Composition
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
CaF2