Ruby and Childrenite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Soluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
3.06-3.25
  
Fracture
Conchoidal
  
Sub-Conchoidal, ConchoidalArthur Thomas, Conchoidal, Uneven
  
Cleavage
No true cleavage
  
Poor/indistinct on {100}
  
Mohs Hardness
9
  
4.5-5
  
Chemical Composition
Al 2 O 3
  
(Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
  
Ruby and Childrenite Chemical Formula
While comparing Ruby and Childrenite 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 Childrenite chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Childrenite- (Fe,Mn)AlPO 4(OH) 2 -H 2OArthur Thomas , Gemstones (2009)
Ruby and Childrenite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Childrenite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Childrenite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 3.06-3.25 whereas that of Childrenite is 3.06-3.25.
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