Brookite and Sugilite Physical Properties

Brookite

Sugilite

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1 Physical Properties

1.1 Tenacity

Brittle

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.87-4.142.69-2.79

1 7.18

1.5 Fracture

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

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

1.6 Cleavage

Poor on {120}, in traces on {001}

Poor on {0001}

1.7 Mohs Hardness

5.5-65.5-6.5

2 10

1.8 Chemical Composition

TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Brookite and Sugilite Chemical Formula

While comparing Brookite 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 Brookite and Sugilite chemical formula.

Chemical formula of Brookite- TiO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
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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Brookite and Sugilite Specific Gravity

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