Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.823.91-4.73
1
7.18
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Fracture
-
Conchoidal
Cleavage
Perfect in one direction, indistinct in one direction
None
Mohs Hardness
66.5-7.5
2
10
👆🏻
Chemical Composition
K2Na(Ca,Mn)2Ti[O|Si7O18(OH)]
ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)