Jet and Friedelite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.19-1.35
  
3.06-3.19
  
Fracture
ConchoidalWalter Schumann, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references
  
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
  
Cleavage
Not Available
  
{010} Perfect
  
Mohs Hardness
2.5-4
  
4-5
  
Chemical Composition
Not Available
  
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
  
Jet and Friedelite Chemical Formula
While comparing Jet and Friedelite 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 Jet and Friedelite chemical formula.
>- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Jet and Friedelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Jet and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Jet and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Jet is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.