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Danburite and Blue John Physical Properties


Blue John and Danburite Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.97-3.03   
3.00-3.25   

Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Conchoidal, Brittle   
Not Available   

Cleavage
{001} Poor   
Not Available   

Mohs Hardness
7   
Not Available   

Chemical Composition
CaB 2(SiO 4) 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references   
CaF 2Michael O’Donoghue , Gems, Sixth Edition (2006)   

Optical Properties >>
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Danburite and Blue John Chemical Formula

While comparing Danburite and Blue John 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 Danburite and Blue John chemical formula.

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Danburite and Blue John Specific Gravity

Another important criteria for qualitative analysis of gemstones is Danburite and Blue John Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Danburite and Blue John Optical Properties during the identification of gemstone. Specific gravity of Danburite is 3.00-3.25 whereas that of Blue John is 3.00-3.25.

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Yellow Gemstones


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