Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.20-3.503.69-3.81
1
7.18
👆🏻
Fracture
-
Uneven, Conchoidal to uneven, ConchoidalWalter Schumann
Cleavage
Indiscernible
Distinct on {110}, imperfect on {010}, poor on {001}
Mohs Hardness
6-78.5
2
10
👆🏻
Chemical Composition
Ruby Zoisite: (Ca,Na)(Al,Mg,Fe)3Al6(BO3)3Si6O18(OH)4
BeAl 2 O 4