Mottramite and Starlite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Soluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
5.9
  
3.91-4.73
  
Fracture
Sub-Conchoidal, Brittle, Metallic
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
None observed
  
Not Available
  
Mohs Hardness
3
  
6.5-7.5
  
Chemical Composition
Not Available
  
ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Mottramite and Starlite Chemical Formula
While comparing Mottramite 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 Mottramite and Starlite chemical formula.
>- Chemical formula of Starlite- ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)
Mottramite and Starlite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Mottramite and Starlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Mottramite and Starlite Optical Properties during the identification of gemstone. Specific gravity of Mottramite is 3.91-4.73 whereas that of Starlite is 3.91-4.73.