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Selenite
Selenite

Andradite
Andradite



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Selenite
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Andradite

Selenite and Andradite Physical Properties

Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
-9999
-
Perfect
2
CaSO4·2H2O
 
Brittle
-
-
3.70-4.10
Conchoidal, Uneven
none
6.5-7
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)

Selenite and Andradite Chemical Formula

While comparing Selenite 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 Selenite and Andradite chemical formula.

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Selenite and Andradite Specific Gravity

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