Tanzanite and Sugilite Physical Properties

Tanzanite

Sugilite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Hard

Not Available

1.4 Specific Gravity

3.35

2.69-2.79

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}

Poor on {0001}

1.7 Mohs Hardness

6.5-7

5.5-6.5

1.8 Chemical Composition

Ca₂Al₃(SiO₄)₃(OH)

KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Tanzanite and Sugilite Chemical Formula

While comparing Tanzanite and Sugilite 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 Sugilite chemical formula.

Chemical formula of Tanzanite- Ca₂Al₃(SiO₄)₃(OH)
Chemical formula of Sugilite- KNa 2(Fe3+ ,Mn3+ ,Al) 2Li 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Tanzanite and Sugilite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Tanzanite and Sugilite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Tanzanite and Sugilite Optical Properties during the identification of gemstone. Specific gravity of Tanzanite is 2.69-2.79 whereas that of Sugilite is 2.69-2.79.