Nickeline and Labradorite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
2.69-2.72
  
Fracture
Conchoidal, Uneven
  
Uneven, Conchoidal, Gems, Sixth Edition (2006)
  
Cleavage
{1010} Imperfect, {0001} Imperfect
  
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
  
Mohs Hardness
5-5.5
  
6-6.5
  
Chemical Composition
Not Available
  
(Na,Ca)1-2Si3-2O8
  
Nickeline and Labradorite Chemical Formula
While comparing Nickeline and Labradorite 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 Nickeline and Labradorite chemical formula.
>- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Nickeline and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Nickeline and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Nickeline and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Nickeline is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.