Omphacite and Zoisite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.16-3.43
  
3.20-3.50
  
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal
  
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even
  
Cleavage
{110} Good, {110} Good
  
Perfect {010} imperfect {100}
  
Mohs Hardness
5-6
  
6-7
  
Chemical Composition
(Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
  
Ca2Al3(SiO4)3(OH)
  
Omphacite and Zoisite Chemical Formula
While comparing Omphacite and Zoisite 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 Omphacite and Zoisite chemical formula.
- Chemical formula of Omphacite- (Ca,Na)(Mg,Fe,Al)Si 2O 6Anthony et al , Handbook of Mineralogy (2001)
- Chemical formula of Zoisite- Ca2Al3(SiO4)3(OH)
Omphacite and Zoisite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Omphacite and Zoisite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Omphacite and Zoisite Optical Properties during the identification of gemstone. Specific gravity of Omphacite is 3.20-3.50 whereas that of Zoisite is 3.20-3.50.