Tanzanite and Tantalite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Hard
  
Not Available
  
Specific Gravity
3.35
  
5.2
  
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009)
  
Cleavage
Perfect {010}, imperfect {100}
  
Good in one direction
  
Mohs Hardness
6.5-7
  
6-6.5
  
Chemical Composition
Ca2Al3(SiO4)3(OH)
  
(Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
  
Tanzanite and Tantalite Chemical Formula
While comparing Tanzanite and Tantalite 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 Tantalite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Tantalite- (Fe,Mn)Ta 2O 6Walter Schumann , Gemstones of the world (2001) More from other references
Tanzanite and Tantalite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Tantalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Tantalite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 5.2 whereas that of Tantalite is 5.2.