Tenacity
Brittle
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
4.32-4.483.69-3.81
1
7.18
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Fracture
Uneven, Subconchoidal, Conchoidal
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
{101}, good; {010}, poor
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
3.58.5
2
10
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Chemical Composition
Zn 2(AsO 4)(OH)Michael OâDonoghue , Gems, Sixth edition (2006)
BeAl 2 O 4