Ruby and Spessartine Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
4.12-4.18
  
Fracture
Conchoidal
  
ConchoidalArthur Thomas, Conchoidal, Brittle
  
Cleavage
No true cleavage
  
{???} Distinct
  
Mohs Hardness
9
  
7-7.5
  
Chemical Composition
Al 2 O 3
  
Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  
Ruby and Spessartine Chemical Formula
While comparing Ruby and Spessartine 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 Spessartine chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Spessartine- Mn 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Ruby and Spessartine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Spessartine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Spessartine Optical Properties during the identification of gemstone. Specific gravity of Ruby is 4.12-4.18 whereas that of Spessartine is 4.12-4.18.
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