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Tanzanite
Tanzanite

Boracite
Boracite



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Tanzanite and Boracite Physical Properties

1 Physical Properties
1.1 Tenacity
Not Available
Brittle
1.2 Solubility
Not Available
Soluble
1.3 Durability
Hard
Not Available
1.4 Specific Gravity
3.35
2.95-2.96
1.5 Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal
1.6 Cleavage
Perfect {010}, imperfect {100}
None
1.7 Mohs Hardness
6.5-7
7-7.5
1.8 Chemical Composition
Ca2Al3(SiO4)3(OH)
Mg 3B 7O 13ClMichael O’Donoghue , 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 O’Donoghue , 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.