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Creedite and Alexandrite Physical Properties


Alexandrite and Creedite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.70   
3.69-3.81   

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

Cleavage
Perfect on {100}   
1,1 ; 3,2.   

Mohs Hardness
4.5   
8.5   

Chemical Composition
Ca 3Al 2(SO 4)(F,OH) 10Ulrich Henn and Claudio C.   
BeAl 2 O 4   

Optical Properties >>
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Creedite and Alexandrite Chemical Formula

While comparing Creedite and Alexandrite 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 Creedite and Alexandrite chemical formula.

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Creedite and Alexandrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Creedite and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Creedite and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Creedite is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.

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