Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.08-3.124.32-4.48
1
7.18
👆🏻
Fracture
ConchoidalWalter Schumann
Uneven, Subconchoidal, Conchoidal
Cleavage
{010} Perfect
{101}, good; {010}, poor
Mohs Hardness
7.53.5
2
10
👆🏻
Chemical Composition
BeAlSiO 4(OH)Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)