Tanzanite and Bustamite Physical Properties

Tanzanite

Bustamite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

Partly soluble in HCl.

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.353.32-3.43

1 7.18

1.5 Fracture

Uneven, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Perfect {010}, imperfect {100}

{100} perfect; {110} and {1 1 0} good; {010} poor

1.7 Mohs Hardness

6.5-75.5-6

2 10

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

(Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Tanzanite and Bustamite Chemical Formula

While comparing Tanzanite and Bustamite 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 Bustamite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Bustamite- (Ca,Mn2+ )Si 3O 9Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Tanzanite and Bustamite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Bustamite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Bustamite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 3.32-3.43 whereas that of Bustamite is 3.32-3.43.