Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.24-2.293.23-3.26
1
7.18
👆🏻
Fracture
Uneven, Subconchoidal, Conchoidal
Conchoidal
Cleavage
Very poor [100]
Perfect on {010} imperfect on {100}
Mohs Hardness
5-5.56.5-7
2
10
👆🏻
Chemical Composition
NaAlSi 2O 6 · H 2OMichael OâDonoghue , Gems, Sixth edition (2006) More from other references
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)