Taaffeite and Topaz Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.60-3.61
  
3.49-3.57
  
Fracture
Conchoidal
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Imperfect/fair/absent
  
[001] Perfect
  
Mohs Hardness
8-8.5
  
8
  
Chemical Composition
Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
  
Al2SiO4(F,OH)2
  
Taaffeite and Topaz Chemical Formula
While comparing Taaffeite and Topaz 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 Taaffeite and Topaz chemical formula.
- Chemical formula of Taaffeite- Mg 3Al 8BeO 16Walter Schumann , Gemstones of the world (2001) More from other references
- Chemical formula of Topaz- Al2SiO4(F,OH)2
Taaffeite and Topaz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Taaffeite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Taaffeite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Taaffeite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.