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Sapphire
Sapphire

Epidote
Epidote



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Sapphire
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Epidote

Sapphire and Epidote Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
insoluble
-
3.95-4.03
Uneven
None, but may exhibit parting
9
Al 2 O 3
 
-
-
-
3.25-3.50
Conchoidal, Fibrous
{001} perfect and {100} imperfect
6-7
CaAl 2(Fe3+ ,Al)Si 3O 12(OH)Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references

Sapphire and Epidote Chemical Formula

While comparing Sapphire and Epidote 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 Sapphire and Epidote chemical formula.

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Sapphire and Epidote Specific Gravity

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