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Sapphire and Umbalite Physical Properties


Umbalite and Sapphire Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
insoluble   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.95-4.03   
3.62-4.33   

Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)   
Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)   

Cleavage
None, but may exhibit parting   
Not Available   

Mohs Hardness
9   
7-7.5   

Chemical Composition
Al 2 O 3   
Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)   

Optical Properties >>
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Sapphire and Umbalite Chemical Formula

While comparing Sapphire and Umbalite 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 Umbalite chemical formula.

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Sapphire and Umbalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Umbalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Umbalite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 3.62-4.33 whereas that of Umbalite is 3.62-4.33.

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