Nepheline and Diopside Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.65
  
3.22-3.40
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal
  
Cleavage
[1010] Poor
  
Distinct/good on {110}
  
Mohs Hardness
5-6
  
5-6
  
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
  
CaMgSi2O6
  
Nepheline and Diopside Chemical Formula
While comparing Nepheline and Diopside 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 Diopside chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Diopside- CaMgSi2O6
Nepheline and Diopside Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Diopside Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Diopside Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 3.22-3.40 whereas that of Diopside is 3.22-3.40.