Hercynite and Nuummite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
4.39
  
3.18-3.37
  
Fracture
ConchoidalGemdat.org, Uneven
  
Conchoidal
  
Cleavage
{111} Indistinct, {111} Indistinct, {111} Indistinct
  
Perfect on 210
  
Mohs Hardness
7.5-8
  
5.5-6
  
Chemical Composition
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
  
Not Available
  
Hercynite and Nuummite Chemical Formula
While comparing Hercynite 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 Hercynite and Nuummite chemical formula.
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
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Hercynite and Nuummite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Hercynite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hercynite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Hercynite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.