Amethyst and Rhodochrosite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
insoluble in common solvents
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.65
  
3.0-3.3
  
Fracture
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Uneven, Conchoidal, Conchoidal to uneven, Brittle
  
Cleavage
Indiscernible
  
On {10 1 1} perfect; parting on {10 1 2}
  
Mohs Hardness
7
  
3.5-4
  
Chemical Composition
SiO2
  
MnCO3
  
Amethyst and Rhodochrosite Chemical Formula
While comparing Amethyst and Rhodochrosite 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 Rhodochrosite chemical formula.
- Chemical formula of Amethyst- SiO2
- Chemical formula of Rhodochrosite- MnCO3
Amethyst and Rhodochrosite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Amethyst and Rhodochrosite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Amethyst and Rhodochrosite Optical Properties during the identification of gemstone. Specific gravity of Amethyst is 3.0-3.3 whereas that of Rhodochrosite is 3.0-3.3.