Gaylussite and Topaz Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
decomposes in water
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
1.93-1.99
  
3.49-3.57
  
Fracture
Conchoidal, Conchoidal, Brittle
  
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
perfect [110]
  
[001] Perfect
  
Mohs Hardness
2.5
  
8
  
Chemical Composition
Na2Ca(CO3)2•5(H2O)
  
Al2SiO4(F,OH)2
  
Gaylussite and Topaz Chemical Formula
While comparing Gaylussite 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 Gaylussite and Topaz chemical formula.
- Chemical formula of Gaylussite- Na2Ca(CO3)2•5(H2O)
- Chemical formula of Topaz- Al2SiO4(F,OH)2
Gaylussite and Topaz Specific Gravity
Another important criteria for qualitative analysis of gemstones is Gaylussite and Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gaylussite and Topaz Optical Properties during the identification of gemstone. Specific gravity of Gaylussite is 3.49-3.57 whereas that of Topaz is 3.49-3.57.