Selenite and Sard Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
Not Available
  
2.58-2.63
  
Fracture
Not Available
  
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Not Available
  
Not Available
  
Mohs Hardness
2
  
6.5-7
  
Chemical Composition
Not Available
  
SiO 2Ulrich Henn and Claudio C.
  
Selenite and Sard Chemical Formula
While comparing Selenite and Sard 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 Selenite and Sard chemical formula.
>- Chemical formula of Sard- SiO 2Ulrich Henn and Claudio C.
Selenite and Sard Specific Gravity
Another important criteria for qualitative analysis of gemstones is Selenite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Selenite and Sard Optical Properties during the identification of gemstone. Specific gravity of Selenite is 2.58-2.63 whereas that of Sard is 2.58-2.63.