Feldspar and Zircon Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
insoluble
  
Durability
Not Available
  
Not Available
  
Specific Gravity
2.56-2.75
  
3.93-4.73
  
Fracture
Uneven, Conchoidal, Uneven, Conchoidal, Gemstones of the world (2001)
  
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
two or three
  
{110} and {111}
  
Mohs Hardness
6-6.5
  
7.5
  
Chemical Composition
Not Available
  
ZrSiO4
  
Feldspar and Zircon Chemical Formula
While comparing Feldspar and Zircon 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 Feldspar and Zircon chemical formula.
>- Chemical formula of Zircon- ZrSiO4
Feldspar and Zircon Specific Gravity
Another important criteria for qualitative analysis of gemstones is Feldspar and Zircon Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Feldspar and Zircon Optical Properties during the identification of gemstone. Specific gravity of Feldspar is 3.93-4.73 whereas that of Zircon is 3.93-4.73.