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Rubellite and Obsidian Physical Properties


Obsidian and Rubellite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.01-3.06   
2.35-2.60   

Fracture
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   
Conchoidal, ConchoidalWalter Schumann, Conchoidal   

Cleavage
Not Available   
Not Available   

Mohs Hardness
7-7.5   
5-5.5   

Chemical Composition
Na(Li 1.5Al 1.5)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012) Formula given for elbaite.   
Not Available   

Optical Properties >>
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Rubellite and Obsidian Chemical Formula

While comparing Rubellite and Obsidian 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 Rubellite and Obsidian chemical formula.

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Rubellite and Obsidian Specific Gravity

Another important criteria for qualitative analysis of gemstones is Rubellite and Obsidian Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Rubellite and Obsidian Optical Properties during the identification of gemstone. Specific gravity of Rubellite is 2.35-2.60 whereas that of Obsidian is 2.35-2.60.

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