Cobaltite and Andradite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
6.3
  
3.70-4.10
  
Fracture
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic
  
Conchoidal, Uneven, Conchoidal, Brittle, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
{100} Good, {010} Good, {001} Good
  
none
  
Mohs Hardness
5.5
  
6.5-7
  
Chemical Composition
CoAsSAnthony et al , Handbook of mineralogy (2001)
  
Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
  
Cobaltite and Andradite Chemical Formula
While comparing Cobaltite and Andradite 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 Cobaltite and Andradite chemical formula.
- Chemical formula of Cobaltite- CoAsSAnthony et al , Handbook of mineralogy (2001)
- Chemical formula of Andradite- Ca 3Fe 2(SiO 4) 3Arthur Thomas , Gemstones (2009)
Cobaltite and Andradite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Cobaltite and Andradite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cobaltite and Andradite Optical Properties during the identification of gemstone. Specific gravity of Cobaltite is 3.70-4.10 whereas that of Andradite is 3.70-4.10.