Spodumene and Sunstone Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.15-3.21
  
2.62-2.65
  
Fracture
Uneven, Subconchoidal, Gemstones (2009)
  
Gemstones of the world (2001)
  
Cleavage
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
  
001
  
Mohs Hardness
6-7
  
6
  
Chemical Composition
LiAlSi2O6
  
Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
  
Spodumene and Sunstone Chemical Formula
While comparing Spodumene and Sunstone 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 Spodumene and Sunstone chemical formula.
- Chemical formula of Spodumene- LiAlSi2O6
- Chemical formula of Sunstone- Microcline: KAlSi3O8 Oligoclase: (Na,Ca)Al1-2Si3-2O8
Spodumene and Sunstone Specific Gravity
Another important criteria for qualitative analysis of gemstones is Spodumene and Sunstone Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Spodumene and Sunstone Optical Properties during the identification of gemstone. Specific gravity of Spodumene is 2.62-2.65 whereas that of Sunstone is 2.62-2.65.