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