Topaz and Spodumene Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.49-3.57
  
3.15-3.21
  
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Uneven, Subconchoidal, Gemstones (2009)
  
Cleavage
[001] Perfect
  
Perfect prismatic, two directions {110} ∧ {1 1 0} at 87°
  
Mohs Hardness
8
  
6-7
  
Chemical Composition
Al2SiO4(F,OH)2
  
LiAlSi2O6
  
Topaz and Spodumene Chemical Formula
While comparing Topaz 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 Topaz and Spodumene chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Spodumene- LiAlSi2O6
Topaz and Spodumene Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Spodumene Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Spodumene Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.15-3.21 whereas that of Spodumene is 3.15-3.21.