Star Ruby and Rutile Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Insoluble in acids
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.10
  
4.20-4.30
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Not Available
  
{110} good, 100 moderate, parting on {092} and {011}
  
Mohs Hardness
Not Available
  
6-6.5
  
Chemical Composition
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
  
TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Star Ruby and Rutile Chemical Formula
While comparing Star Ruby and Rutile 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 Rutile chemical formula.
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Rutile- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006)
Star Ruby and Rutile Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Ruby and Rutile Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Rutile Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 4.20-4.30 whereas that of Rutile is 4.20-4.30.