Zircon and Oligoclase Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
insoluble
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.93-4.73
  
2.62-2.67
  
Fracture
Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)
  
Gems, Sixth Edition (2006), Gems, Sixth Edition (2006), Uneven
  
Cleavage
{110} and {111}
  
From the Greek, oligos and kasein, little cleavage.
  
Mohs Hardness
7.5
  
6-6.5
  
Chemical Composition
ZrSiO4
  
Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
  
Zircon and Oligoclase Chemical Formula
While comparing Zircon and Oligoclase 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 Zircon and Oligoclase chemical formula.
- Chemical formula of Zircon- ZrSiO4
- Chemical formula of Oligoclase- Na(90-70%)Ca(10-30%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Zircon and Oligoclase Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zircon and Oligoclase Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zircon and Oligoclase Optical Properties during the identification of gemstone. Specific gravity of Zircon is 2.62-2.67 whereas that of Oligoclase is 2.62-2.67.