Kyanite and Spodumene Physical Properties
Tenacity
Brittle
  
Brittle
  
Solubility
Not Available
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.53-3.65
  
3.15-3.21
  
Fracture
Splintery, Brittle, Metallic
  
Uneven, Subconchoidal, Gemstones (2009)
  
Cleavage
[100] perfect [010] imperfect with 79° angle between
  
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
  
Mohs Hardness
4-7
  
6-7
  
Chemical Composition
Not Available
  
LiAlSi2O6
  
Kyanite and Spodumene Chemical Formula
While comparing Kyanite and Spodumene 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 Kyanite and Spodumene chemical formula.
>- Chemical formula of Spodumene- LiAlSi2O6
Kyanite and Spodumene Specific Gravity
Another important criteria for qualitative analysis of gemstones is Kyanite and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kyanite and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Kyanite is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.