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Zoisite
Zoisite

Andradite
Andradite



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Zoisite
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Andradite

Zoisite and Andradite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.20-3.50
Uneven, Conchoidal, Even
Perfect {010} imperfect {100}
6-7
Ca2Al3(SiO4)3(OH)
 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Zoisite and Andradite Chemical Formula

While comparing Zoisite and Andradite physical properties, the important data you should know is its chemical composition. Since chemical formula defines the molecular structure of the crystal, most of the physical properties like color, tenacity, solubility are governed by Zoisite and Andradite chemical formula.

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Zoisite and Andradite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Zoisite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite Vs Andradite during the identification of gemstone. Specific gravity of Zoisite is whereas that of Andradite is .