Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.70-2.754.00-4.62
1
7.18
👆🏻
Fracture
Conchoidal
Conchoidal, Uneven
Cleavage
From the Greek for luster, for its pearly luster on the cleavage.
Indistinct parting on [111]
Mohs Hardness
4.5-57.5-8
2
10
👆🏻
Chemical Composition
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)
ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)