Zoisite and Nuummite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.20-3.50
  
3.18-3.37
  
Fracture
Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even
  
Conchoidal
  
Cleavage
Perfect {010} imperfect {100}
  
Perfect on 210
  
Mohs Hardness
6-7
  
5.5-6
  
Chemical Composition
Ca2Al3(SiO4)3(OH)
  
Not Available
  
Zoisite and Nuummite Chemical Formula
While comparing Zoisite and Nuummite 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 Zoisite and Nuummite chemical formula.
- Chemical formula of Zoisite- Ca2Al3(SiO4)3(OH)
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Zoisite and Nuummite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Zoisite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Zoisite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Zoisite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.