Almandine and Pyrite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
insoluble in water
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.95-4.30
  
5.00-5.20
  
Fracture
Conchoidal, Brittle, Conchoidal, Brittle, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Uneven, Conchoidal, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle
  
Cleavage
none
  
Indistinct on {001}; partings on {011} and {111}
  
Mohs Hardness
7-7.5
  
6-6.5
  
Chemical Composition
Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  
FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Almandine and Pyrite Chemical Formula
While comparing Almandine and Pyrite 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 Almandine and Pyrite chemical formula.
- Chemical formula of Almandine- Fe 3Al 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
- Chemical formula of Pyrite- FeS 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Almandine and Pyrite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Almandine and Pyrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Almandine and Pyrite Optical Properties during the identification of gemstone. Specific gravity of Almandine is 5.00-5.20 whereas that of Pyrite is 5.00-5.20.