Topaz and Lepidolite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.49-3.57
  
2.80-2.90
  
Fracture
Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Uneven, UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
[001] Perfect
  
{001} perfect
  
Mohs Hardness
8
  
2.5
  
Chemical Composition
Al2SiO4(F,OH)2
  
Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.
  
Topaz and Lepidolite Chemical Formula
While comparing Topaz and Lepidolite 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 Lepidolite chemical formula.
- Chemical formula of Topaz- Al2SiO4(F,OH)2
- Chemical formula of Lepidolite- Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.
Topaz and Lepidolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Topaz and Lepidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Topaz and Lepidolite Optical Properties during the identification of gemstone. Specific gravity of Topaz is 2.80-2.90 whereas that of Lepidolite is 2.80-2.90.