Tenacity
Brittle
-
Solubility
-
-
Durability
-
-
Specific Gravity
2.97-3.033.23-3.26
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Conchoidal
Cleavage
{001} Poor
Perfect on {010} imperfect on {100}
Mohs Hardness
76.5-7
2
10
👆🏻
Chemical Composition
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Mg 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)