Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.54-2.612.70-2.75
1
7.18
👆🏻
Fracture
Uneven
Conchoidal
Cleavage
{001} Perfect, {010} Good
From the Greek for luster, for its pearly luster on the cleavage.
Mohs Hardness
64.5-5
2
10
👆🏻
Chemical Composition
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)