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Apatite and Star Sapphire Physical Properties


Star Sapphire and Apatite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.16-3.23   
3.90-4.05   

Fracture
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal to uneven   
Not Available   

Cleavage
[0001] indistinct, [1010] indistinct   
Not Available   

Mohs Hardness
5   
Not Available   

Chemical Composition
Ca 5(PO 4) 3(F,OH,Cl)Walter Schumann , Gemstones of the world (2001) More from other references   
Al 2O 3Ulrich Henn and Claudio C.   

Optical Properties >>
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Apatite and Star Sapphire Chemical Formula

While comparing Apatite and Star Sapphire 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 Apatite and Star Sapphire chemical formula.

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Apatite and Star Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Apatite and Star Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Apatite and Star Sapphire Optical Properties during the identification of gemstone. Specific gravity of Apatite is 3.90-4.05 whereas that of Star Sapphire is 3.90-4.05.

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