Tanzanite and Boracite Physical Properties
Tenacity
Not Available
Brittle
Solubility
Not Available
Soluble
Durability
Hard
Not Available
Specific Gravity
3.35
2.95-2.96
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
Cleavage
Perfect {010}, imperfect {100}
None
Mohs Hardness
6.5-7
7-7.5
Chemical Composition
Ca2Al3(SiO4)3(OH)
Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Tanzanite and Boracite Chemical Formula
While comparing Tanzanite and Boracite 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 Boracite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Boracite- Mg 3B 7O 13ClMichael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Tanzanite and Boracite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Boracite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Boracite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.95-2.96 whereas that of Boracite is 2.95-2.96.