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Andradite
Andradite

Spinel
Spinel



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Andradite
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Spinel

Andradite and Spinel Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
 
-
-
-
3.64-3.66
Conchoidal, Uneven
None, but may exhibit slight parting
8
MgAl2O4

Andradite and Spinel Chemical Formula

While comparing Andradite and Spinel 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 Andradite and Spinel chemical formula.

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Andradite and Spinel Specific Gravity

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