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Obsidian and Purpurite Physical Properties


Purpurite and Obsidian Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.35-2.60   
3.2-3.4   

Fracture
Conchoidal, ConchoidalWalter Schumann, Conchoidal   
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle   

Cleavage
Not Available   
[100] [001] perfect   

Mohs Hardness
5-5.5   
4-4.5   

Chemical Composition
Not Available   
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references   

Optical Properties >>
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Obsidian and Purpurite Chemical Formula

While comparing Obsidian 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 Obsidian and Purpurite chemical formula.

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Obsidian and Purpurite Specific Gravity

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

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