Tanzanite and Zincite Physical Properties
Tenacity
Not Available
  
Brittle
  
Solubility
Not Available
  
Not Available
  
Durability
Hard
  
Not Available
  
Specific Gravity
3.35
  
5.50-5.90
  
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle
  
Cleavage
Perfect {010}, imperfect {100}
  
On {10 1 0}, perfect; parting on {000 1 }
  
Mohs Hardness
6.5-7
  
4
  
Chemical Composition
Ca2Al3(SiO4)3(OH)
  
(Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Tanzanite and Zincite Chemical Formula
While comparing Tanzanite and Zincite 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 Tanzanite and Zincite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Zincite- (Zn,Mn2+ )OMichael OâDonoghue , Gems, Sixth Edition (2006)
Tanzanite and Zincite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Zincite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Zincite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 5.50-5.90 whereas that of Zincite is 5.50-5.90.