Andradite Garnet and Black Opal Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.8-3.9
  
1.97-2.22
  
Fracture
Not Available
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
None
  
Not Available
  
Mohs Hardness
6.5-7.5
  
6-6.5
  
Chemical Composition
Ca3Fe3+2Si3O12
  
SiO 2 + H 2OUlrich Henn and Claudio C.
  
Andradite Garnet and Black Opal Chemical Formula
While comparing Andradite Garnet and Black Opal 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 Andradite Garnet and Black Opal chemical formula.
- Chemical formula of Andradite Garnet- Ca3Fe3+2Si3O12
- Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.
Andradite Garnet and Black Opal Specific Gravity
Another important criteria for qualitative analysis of gemstones is Andradite Garnet and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Andradite Garnet and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Andradite Garnet is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.