Purpurite and Blue spinel Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.2-3.4
  
Not Available
  
Fracture
Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle
  
Not Available
  
Cleavage
[100] [001] perfect
  
Not Available
  
Mohs Hardness
4-4.5
  
Not Available
  
Chemical Composition
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
  
Not Available
  
Purpurite and Blue spinel Chemical Formula
While comparing Purpurite and Blue spinel 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 Purpurite and Blue spinel chemical formula.
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
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Purpurite and Blue spinel Specific Gravity
Another important criteria for qualitative analysis of gemstones is Purpurite and Blue spinel Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Purpurite and Blue spinel Optical Properties during the identification of gemstone. Specific gravity of Purpurite is Not Available whereas that of Blue spinel is Not Available.