Topaz and Annabergite Physical Properties
Tenacity
Not Available
  
Sectile
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.49-3.57
  
3.07
  
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Brittle, Metallic, Brittle, Metallic, Brittle, Metallic
  
Cleavage
[001] Perfect
  
Perfect on {010}, indistinct on {100} and {102}
  
Mohs Hardness
8
  
2
  
Chemical Composition
Al2SiO4(F,OH)2
  
Ni3(AsO4)2•8(H2O)
  
Topaz and Annabergite Chemical Formula
While comparing Topaz and Annabergite 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 Annabergite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Annabergite- Ni3(AsO4)2•8(H2O)
Topaz and Annabergite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Annabergite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Annabergite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 3.07 whereas that of Annabergite is 3.07.