Tanzanite and Ulexite Physical Properties
Tenacity
Not Available
  
Not Available
  
Solubility
Not Available
  
Not Available
  
Durability
Hard
  
Not Available
  
Specific Gravity
3.35
  
1.65-1.99
  
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
  
UnevenAnthony et al, Uneven, UnevenAnthony et al, Uneven, Brittle, Metallic
  
Cleavage
Perfect {010}, imperfect {100}
  
{010} Perfect, {110} Perfect
  
Mohs Hardness
6.5-7
  
2-2.5
  
Chemical Composition
Ca2Al3(SiO4)3(OH)
  
NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
  
Tanzanite and Ulexite Chemical Formula
While comparing Tanzanite and Ulexite 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 Ulexite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Ulexite- NaCaB 5O 6(OH) 6 · 5H 2OMichael OâDonoghue , Gems, Sixth Edition (2006)
Tanzanite and Ulexite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Ulexite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Ulexite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 1.65-1.99 whereas that of Ulexite is 1.65-1.99.