Tanzanite and Esperite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
3.35
4.28-4.42
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Conchoidal, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Metallic
Cleavage
Perfect {010}, imperfect {100}
Distinct on [010] and [100] poor on [101]
Mohs Hardness
6.5-7
5-5.5
Chemical Composition
Ca2Al3(SiO4)3(OH)
PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Tanzanite and Esperite Chemical Formula
While comparing Tanzanite and Esperite 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 Esperite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Esperite- PbCa 3Zn 4(SiO 4) 4Anthony et al , Handbook of mineralogy (2001)
Tanzanite and Esperite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Esperite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Esperite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 4.28-4.42 whereas that of Esperite is 4.28-4.42.