Ruby and Lepidolite Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.97-4.05
  
2.80-2.90
  
Fracture
Conchoidal
  
Uneven, UnevenArthur Thomas, Gemstones (2009)
  
Cleavage
No true cleavage
  
{001} perfect
  
Mohs Hardness
9
  
2.5
  
Chemical Composition
Al 2 O 3
  
Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.
  
Ruby and Lepidolite Chemical Formula
While comparing Ruby 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 Ruby and Lepidolite chemical formula.
- Chemical formula of Ruby- Al 2 O 3
- Chemical formula of Lepidolite- Mg 3Si 4O 10(OH) 2Ulrich Henn and Claudio C.
Ruby and Lepidolite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Ruby and Lepidolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Lepidolite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 2.80-2.90 whereas that of Lepidolite is 2.80-2.90.
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