Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.293.63-3.9
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Conchoidal, Uneven
Cleavage
Very poor [100]
Indistinct
Mohs Hardness
5-5.57.5-8
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
(Mg,Fe2+ )Al 2O 4Gemdat.org , Management Team (2012) More from other references