Tenacity
-
Brittle
Solubility
-
Soluble
Durability
-
-
Specific Gravity
2.793.25-3.35
1
7.18
👆🏻
Fracture
-
Conchoidal, ConchoidalWalter Schumann
Cleavage
{100} and {010} perfect
Perfect in three directions
Mohs Hardness
65
2
10
👆🏻
Chemical Composition
LiNa(Zr,Ti,Hf)Si 6O 15Ulrich Henn and Claudio C.
CuSiO 2(OH) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references