Tanzanite and Bertrandite Physical Properties
Tenacity
Not Available
Not Available
Solubility
Not Available
Not Available
Durability
Hard
Not Available
Specific Gravity
3.35
2.59-2.60
Fracture
Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)
Brittle, Metallic, Brittle, Metallic
Cleavage
Perfect {010}, imperfect {100}
{001} Perfect, {110} Distinct, {101} Distinct
Chemical Composition
Ca2Al3(SiO4)3(OH)
Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Tanzanite and Bertrandite Chemical Formula
While comparing Tanzanite and Bertrandite 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 Bertrandite chemical formula.
- Chemical formula of Tanzanite- Ca2Al3(SiO4)3(OH)
- Chemical formula of Bertrandite- Be 4Si 2O 7(OH) 2Anthony et al , Handbook of mineralogy (2001)
Tanzanite and Bertrandite Specific Gravity
Another important criteria for qualitative analysis of gemstones is Tanzanite and Bertrandite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Bertrandite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.59-2.60 whereas that of Bertrandite is 2.59-2.60.