Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.20-2.265.9-6.3
1
7.18
👆🏻
Fracture
Uneven
Conchoidal, Uneven
Cleavage
Perfect on {110}
On {101}, distinct; on {112}, interrupted; on {001}, indistinct
Mohs Hardness
5-5.54.5-5
2
10
👆🏻
Chemical Composition
Na 2[Al 2Si 3O 10] · 2H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
CaWO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references