Nepheline and Cuprite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.55-2.65
  
5.85-6.15
  
Fracture
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle
  
Conchoidal, Metallic, UnevenArthur Thomas, Gemstones (2009), Brittle, Conchoidal
  
Cleavage
[1010] Poor
  
Fair in four directions forming octahedrons
  
Mohs Hardness
5-6
  
3.5-4
  
Chemical Composition
Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
  
Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
  
Nepheline and Cuprite Chemical Formula
While comparing Nepheline and Cuprite 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 Cuprite chemical formula.
- Chemical formula of Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.
- Chemical formula of Cuprite- Cu 2OMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Nepheline and Cuprite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nepheline and Cuprite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nepheline and Cuprite Optical Properties during the identification of gemstone. Specific gravity of Nepheline is 5.85-6.15 whereas that of Cuprite is 5.85-6.15.