Sugilite and Brookite Physical Properties

Sugilite

Brookite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

2.69-2.793.87-4.14

1 7.18

2.5 Fracture

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

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

2.6 Cleavage

Poor on {0001}

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

2.7 Mohs Hardness

5.5-6.55.5-6

2 10

2.11 Chemical Composition

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

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

Sugilite and Brookite Chemical Formula

While comparing Sugilite and Brookite 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 Sugilite and Brookite chemical formula.

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

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Sugilite and Brookite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sugilite and Brookite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sugilite and Brookite Optical Properties during the identification of gemstone. Specific gravity of Sugilite is 3.87-4.14 whereas that of Brookite is 3.87-4.14.