Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
2.97-3.033.90-4.00
1
7.18
👆🏻
Fracture
Uneven, ConchoidalWalter Schumann, Conchoidal
Conchoidal
Cleavage
{001} Poor
Perfect on {001}, good on {210}, poor on {010}
Mohs Hardness
73-3.5
2
10
👆🏻
Chemical Composition
CaB 2(SiO 4) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
SrSO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references