Nepheline and Amethyst Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
insoluble in common solvents
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.65
  
2.65
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Conchoidal, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Cleavage
[1010] Poor
  
Indiscernible
  
Mohs Hardness
5-6
  
7
  
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
  
SiO2
  
Nepheline and Amethyst Chemical Formula
While comparing Nepheline 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 Nepheline and Amethyst chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Amethyst- SiO2
Nepheline and Amethyst Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Amethyst Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Amethyst Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 2.65 whereas that of Amethyst is 2.65.