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Sapphire
Sapphire

Franklinite
Franklinite



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Sapphire
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Franklinite

Sapphire and Franklinite Physical Properties

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
 
-
-
-
5.05-5.22
Uneven
None
5.5-6
(Zn,Mn2+ ,Fe2+ )(Fe3+ ,Mn3+ ) 2O 4Anthony et al , Handbook of mineralogy (2001)

Sapphire and Franklinite Chemical Formula

While comparing Sapphire and Franklinite 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 Franklinite chemical formula.

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Sapphire and Franklinite Specific Gravity

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