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Sapphire and Boracite Physical Properties


Boracite and Sapphire Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
insoluble   
Soluble   

Durability
Not Available   
Not Available   

Specific Gravity
3.95-4.03   
2.95-2.96   

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

Cleavage
None, but may exhibit parting   
None   

Mohs Hardness
9   
7-7.5   

Chemical Composition
Al 2 O 3   
Mg 3B 7O 13ClMichael O’Donoghue , Gems, Sixth Edition (2006) More from other references   

Optical Properties >>
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Sapphire and Boracite Chemical Formula

While comparing Sapphire and Boracite 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 Boracite chemical formula.

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Sapphire and Boracite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Boracite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Boracite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.95-2.96 whereas that of Boracite is 2.95-2.96.

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