Moonstone and Kyanite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.56-2.60
  
3.53-3.65
  
Fracture
Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001)
  
Splintery, Brittle, Metallic
  
Cleavage
2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal
  
[100] perfect [010] imperfect with 79° angle between
  
Mohs Hardness
6-6.5
  
4-7
  
Chemical Composition
Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
  
Not Available
  
Moonstone and Kyanite Chemical Formula
While comparing Moonstone and Kyanite 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 Moonstone and Kyanite chemical formula.
- Chemical formula of Moonstone- Plagioclase Feldspar s: (Na,Ca)Al1-2Si3-2O8 Orthoclase Feldspar : KAlSi3O8
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Moonstone and Kyanite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Moonstone and Kyanite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Moonstone and Kyanite Optical Properties during the identification of gemstone. Specific gravity of Moonstone is 3.53-3.65 whereas that of Kyanite is 3.53-3.65.