Topaz and Sanidine Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.49-3.57
  
2.54-2.61
  
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Uneven, Uneven, Gems, Sixth Edition (2006)
  
Cleavage
[001] Perfect
  
{001} Perfect, {010} Good
  
Mohs Hardness
8
  
6
  
Chemical Composition
Al2SiO4(F,OH)2
  
KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Topaz and Sanidine Chemical Formula
While comparing Topaz and Sanidine 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 Sanidine chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Sanidine- KAlSi 3O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Topaz and Sanidine Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Sanidine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Sanidine Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.54-2.61 whereas that of Sanidine is 2.54-2.61.