Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.08-3.122.79-2.87
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Conchoidal
Cleavage
{010} Perfect
{010} perfect; {100} good, interrupted; {101} indistinct; {001} in traces
Mohs Hardness
7.55.5-6
2
10
👆🏻
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
NaBePO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references