Ruby and Serandite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
3.52
  
Fracture
Conchoidal
  
UnevenAnthony et al, Handbook of mineralogy (2001), UnevenAnthony et al, Handbook of mineralogy (2001)
  
Cleavage
No true cleavage
  
{100} Perfect, {001} Perfect
  
Mohs Hardness
9
  
5-5.5
  
Chemical Composition
Al 2 O 3
  
Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Ruby and Serandite Chemical Formula
While comparing Ruby and Serandite 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 Serandite chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Serandite- Na(Mn2+ ,Ca) 2Si 3O 8(OH)Michael OâDonoghue , Gems, Sixth Edition (2006)
Ruby and Serandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Serandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Serandite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.52 whereas that of Serandite is 3.52.
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