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Star Ruby and Alunite Physical Properties


Alunite and Star Ruby Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
Soluble   

Durability
Not Available   
Not Available   

Specific Gravity
3.95-4.10   
2.6-2.9   

Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)   
Conchoidal, Uneven   

Cleavage
Not Available   
On {0001}, perfect   

Mohs Hardness
Not Available   
3.5-4   

Chemical Composition
Al 2O 3Michael O’Donoghue , Gems, Sixth Edition (2006)   
KAl3(SO4)2(OH)6   

Optical Properties >>
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Star Ruby and Alunite Chemical Formula

While comparing Star Ruby and Alunite 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 Star Ruby and Alunite chemical formula.

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Star Ruby and Alunite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Ruby and Alunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Alunite Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 2.6-2.9 whereas that of Alunite is 2.6-2.9.

Blue Gemstones

Blue Gemstones


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