Humite and Paraiba Physical Properties
Tenacity
Brittle
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Not Available
  
Not Available
  
Specific Gravity
3.20-3.32
  
3.04-3.13
  
Fracture
Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal
  
Not Available
  
Cleavage
Poor
  
Not Available
  
Mohs Hardness
6-6.5
  
7-7.5
  
Chemical Composition
(Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
  
Not Available
  
Humite and Paraiba Chemical Formula
While comparing Humite and Paraiba 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 Humite and Paraiba chemical formula.
- Chemical formula of Humite- (Mg,Fe2+ ) 7(SiO 4) 3(F,OH) 2Anthony et al , Handbook of mineralogy (2001)
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Humite and Paraiba Specific Gravity
Another important criteria for qualitative analysis of gemstones is Humite and Paraiba Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Humite and Paraiba Optical Properties during the identification of gemstone. Specific gravity of Humite is 3.04-3.13 whereas that of Paraiba is 3.04-3.13.