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Sapphire and Brookite Physical Properties


Brookite and Sapphire Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
insoluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.95-4.03   
3.87-4.14   

Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)   
Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle   

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

Mohs Hardness
9   
5.5-6   

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

Optical Properties >>
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Sapphire and Brookite Chemical Formula

While comparing Sapphire 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 Sapphire and Brookite chemical formula.

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Sapphire and Brookite Specific Gravity

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

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