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Sugilite
Sugilite

Brookite
Brookite



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Sugilite
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Brookite

Sugilite and Brookite Physical Properties

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Physical Properties

Tenacity

-
Brittle

Solubility

-
-

Durability

-
-

Specific Gravity

2.69-2.793.87-4.14
1 7.18
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Fracture

Conchoidal
Subconchoidal, Conchoidal

Cleavage

Poor on {0001}
Poor on {120}, in traces on {001}

Mohs Hardness

5.5-6.55.5-6
2 10
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Chemical Composition

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

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.