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Elbaite and Alexandrite Physical Properties


Alexandrite and Elbaite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.90-3.10   
3.69-3.81   

Fracture
Uneven, Conchoidal, Brittle, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   
Not Available   

Cleavage
Poor/indistinct on {1120} and {1011}   
1,1 ; 3,2.   

Mohs Hardness
7   
8.5   

Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) More from other references   
BeAl 2 O 4   

Optical Properties >>
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Elbaite and Alexandrite Chemical Formula

While comparing Elbaite 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 Elbaite and Alexandrite chemical formula.

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Elbaite and Alexandrite Specific Gravity

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

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