Ruby and Sunstone Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
2.62-2.65
  
Fracture
Conchoidal
  
Gemstones of the world (2001)
  
Cleavage
No true cleavage
  
001
  
Mohs Hardness
9
  
6
  
Chemical Composition
Al 2 O 3
  
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
  
Ruby and Sunstone Chemical Formula
While comparing Ruby and Sunstone 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 Sunstone chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Sunstone- Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
Ruby and Sunstone Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Sunstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Sunstone Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.62-2.65 whereas that of Sunstone is 2.62-2.65.
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