Vlasovite and Starlite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Nearly insoluble in HCl and HNO3
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.97
  
3.91-4.73
  
Fracture
Conchoidal, Brittle
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Distinct on {010}
  
Not Available
  
Mohs Hardness
6
  
6.5-7.5
  
Chemical Composition
Not Available
  
ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Vlasovite and Starlite Chemical Formula
While comparing Vlasovite and Starlite 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 Vlasovite and Starlite chemical formula.
>- Chemical formula of Starlite- ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Vlasovite and Starlite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Vlasovite and Starlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vlasovite and Starlite Optical Properties during the identification of gemstone. Specific gravity of Vlasovite is 3.91-4.73 whereas that of Starlite is 3.91-4.73.