Zoisite and Sugilite Physical Properties

Zoisite

Sugilite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.20-3.502.69-2.79

1 7.18

1.5 Fracture

Uneven, Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Even

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

1.6 Cleavage

Perfect {010} imperfect {100}

Poor on {0001}

1.7 Mohs Hardness

6-75.5-6.5

2 10

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

Zoisite and Sugilite Chemical Formula

While comparing Zoisite 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 Zoisite and Sugilite chemical formula.

Chemical formula of Zoisite- 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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Zoisite and Sugilite Specific Gravity

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