Tanzanite and Neptunite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
3.35
3.19-3.23
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle
Cleavage
Perfect {010}, imperfect {100}
{110} good
Chemical Composition
Ca2Al3(SiO4)3(OH)
KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Tanzanite and Neptunite Chemical Formula
While comparing Tanzanite and Neptunite 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 Neptunite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Neptunite- KNa 2Li(Fe2+ ,Mn2+ ) 2Ti 2Si 8O 24Michael OâDonoghue , Gems, Sixth Edition (2006)
Tanzanite and Neptunite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Neptunite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Neptunite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.19-3.23 whereas that of Neptunite is 3.19-3.23.