Star Ruby and Purpurite 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 OâDonoghue , Gems, Sixth Edition (2006)
MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
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.
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references
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.