Amethyst and Friedelite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
insoluble in common solvents
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65
  
3.06-3.19
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
UnevenArthur Thomas, Gemstones (2009) Tough, UnevenArthur Thomas, Gemstones (2009) Tough, Brittle, Uneven
  
Cleavage
Indiscernible
  
{010} Perfect
  
Mohs Hardness
7
  
4-5
  
Chemical Composition
SiO2
  
Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
  
Amethyst and Friedelite Chemical Formula
While comparing Amethyst 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 Amethyst and Friedelite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Friedelite- Mn 8Si 6O 15(OH,Cl) 10Ulrich Henn and Claudio C.
Amethyst and Friedelite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Friedelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Friedelite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 3.06-3.19 whereas that of Friedelite is 3.06-3.19.