Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.05-3.212.81
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Splintery
Conchoidal
Cleavage
Good on {110}, poor on {100}
{001} Perfect
Mohs Hardness
7.54.5-5
2
10
👆🏻
Chemical Composition
Al 2SiO 5Michael OâDonoghue , Gems, Sixth edition (2006) More from other references
NaAl 3(PO 4) 2(OH) 4 · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references