Ruby and Willemite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
3.89-4.18
  
Fracture
Conchoidal
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven
  
Cleavage
No true cleavage
  
{0001}, {11 2 0} imperfect
  
Mohs Hardness
9
  
5.5
  
Chemical Composition
Al 2 O 3
  
Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Ruby and Willemite Chemical Formula
While comparing Ruby and Willemite 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 Ruby and Willemite chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Ruby and Willemite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Willemite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Willemite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.89-4.18 whereas that of Willemite is 3.89-4.18.
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