Tenacity
-
-
Solubility
-
-
Durability
-
-
Specific Gravity
3.20-3.502.55-2.65
1
7.18
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Fracture
-
Conchoidal
Cleavage
Indiscernible
Perfect {10 1 0}
Mohs Hardness
6-75.5-6
2
10
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Chemical Composition
Ruby Zoisite: (Ca,Na)(Al,Mg,Fe)3Al6(BO3)3Si6O18(OH)4
(Na,Ca,K) 8(Si,Al) 12O 24(SO 4,Cl,CO 3) 3(H 2O)Arthur Thomas , Gemstones (2009)