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Sapphire
Sapphire

Apatite
Apatite



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Sapphire
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Apatite

Sapphire and Apatite 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
 
-
-
-
3.16-3.23
Conchoidal, Uneven, Conchoidal to uneven
[0001] indistinct, [1010] indistinct
5
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references

Sapphire and Apatite Chemical Formula

While comparing Sapphire and Apatite 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 Apatite chemical formula.

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Sapphire and Apatite Specific Gravity

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