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Brookite
Brookite

Sapphire
Sapphire



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Brookite
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Sapphire

Brookite and Sapphire Physical Properties

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Physical Properties

Tenacity

Brittle
-

Solubility

-
insoluble

Durability

-
-

Specific Gravity

3.87-4.143.95-4.03
1 7.18
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Fracture

Subconchoidal, Conchoidal
Uneven

Cleavage

Poor on {120}, in traces on {001}
None, but may exhibit parting

Mohs Hardness

5.5-69
2 10
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Chemical Composition

TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
Al 2 O 3

Brookite and Sapphire Chemical Formula

While comparing Brookite and Sapphire 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 Sapphire chemical formula.

  • Chemical formula of Brookite- TiO 2Michael O’Donoghue , Gems, Sixth Edition (2006) More from other references
  • Chemical formula of Sapphire- Al 2 O 3

Brookite and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Brookite and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Brookite and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Brookite is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.