Tanzanite and Bytownite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
3.35
2.72-2.75
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Uneven, Uneven, Gems, Sixth Edition (2006)
Cleavage
Perfect {010}, imperfect {100}
Perfect on [001], good on [010], imperfect on [110]
Mohs Hardness
6.5-7
6-6.5
Chemical Composition
Ca2Al3(SiO4)3(OH)
Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Tanzanite and Bytownite Chemical Formula
While comparing Tanzanite and Bytownite 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 Bytownite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Bytownite- Ca(70-90%)Na(30-10%)(Al,Si)AlSi 2O 8Michael OâDonoghue , Gems, Sixth Edition (2006)
Tanzanite and Bytownite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Bytownite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Bytownite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.72-2.75 whereas that of Bytownite is 2.72-2.75.