Tanzanite and Hercynite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
3.35
4.39
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
ConchoidalGemdat.org, Uneven
Cleavage
Perfect {010}, imperfect {100}
{111} Indistinct, {111} Indistinct, {111} Indistinct
Mohs Hardness
6.5-7
7.5-8
Chemical Composition
Ca2Al3(SiO4)3(OH)
Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Tanzanite and Hercynite Chemical Formula
While comparing Tanzanite and Hercynite 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 Hercynite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Hercynite- Fe2+ Al 2O 4Gemdat.org , Management Team (2012)
Tanzanite and Hercynite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Hercynite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Hercynite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 4.39 whereas that of Hercynite is 4.39.