Feldspar and Labradorite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.56-2.75
  
2.69-2.72
  
Fracture
Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)
  
Uneven, Conchoidal, Gems, Sixth Edition (2006)
  
Cleavage
two or three
  
Perfect on {001}, less perfect on {010}, intersecting at near 90°; distinct on {110}
  
Mohs Hardness
6-6.5
  
6-6.5
  
Chemical Composition
Not Available
  
(Na,Ca)1-2Si3-2O8
  
Feldspar and Labradorite Chemical Formula
While comparing Feldspar 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 Feldspar and Labradorite chemical formula.
>- Chemical formula of Labradorite- (Na,Ca)1-2Si3-2O8
Feldspar and Labradorite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Feldspar and Labradorite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Feldspar and Labradorite Optical Properties during the identification of gemstone. Specific gravity of Feldspar is 2.69-2.72 whereas that of Labradorite is 2.69-2.72.