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Star Ruby and Purpurite Physical Properties


Purpurite and Star Ruby Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.95-4.10   
3.2-3.4   

Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)   
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle   

Cleavage
Not Available   
[100] [001] perfect   

Mohs Hardness
Not Available   
4-4.5   

Chemical Composition
Al 2O 3Michael O’Donoghue , Gems, Sixth Edition (2006)   
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references   

Optical Properties >>
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Star Ruby and Purpurite Chemical Formula

While comparing Star Ruby and Purpurite 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 Purpurite chemical formula.

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Star Ruby and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Star Ruby and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.

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Blue Gemstones


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