Star Ruby and Hollandite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.10
  
5.05
  
Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Brittle, Metallic
  
Cleavage
Not Available
  
Distinct / Good, Prismatic
  
Mohs Hardness
Not Available
  
4-6
  
Chemical Composition
Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Ba(Mn++++,Mn++)8O16
  
Star Ruby and Hollandite Chemical Formula
While comparing Star Ruby and Hollandite 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 Hollandite chemical formula.
- Chemical formula of Star Ruby- Al 2O 3Michael OâDonoghue , Gems, Sixth Edition (2006)
- Chemical formula of Hollandite- Ba(Mn++++,Mn++)8O16
Star Ruby and Hollandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Star Ruby and Hollandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Star Ruby and Hollandite Optical Properties during the identification of gemstone. Specific gravity of Star Ruby is 5.05 whereas that of Hollandite is 5.05.