Tenacity
-
Brittle
Solubility
-
-
Durability
-
-
Specific Gravity
3.20-3.503.98-4.04
1
7.18
👆🏻
Fracture
-
Conchoidal
Cleavage
Indiscernible
Imperfect, poor one {100}
Mohs Hardness
6-74.5-5
2
10
👆🏻
Chemical Composition
Ruby Zoisite: (Ca,Na)(Al,Mg,Fe)3Al6(BO3)3Si6O18(OH)4
Zn 2(AsO 4)(OH) · H 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references