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Diamond and Corundum Physical Properties


Corundum and Diamond Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Soluble   
insoluble   

Durability
Not Available   
Not Available   

Specific Gravity
3.50-3.53   
3.90-4.05   

Fracture
Conchoidal, Conchoidal, Gemstones of the world (2001) More from other references, Conchoidal, Brittle   
Uneven, Uneven, Gems, Difficult, Fibrous   

Cleavage
111 (perfect in four directions)   
None – parting in 3 directions   

Mohs Hardness
10   
9   

Chemical Composition
C   
Al 2O 3Arthur Thomas , Gemstones (2009)   

Optical Properties >>
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Diamond and Corundum Chemical Formula

While comparing Diamond and Corundum 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 Diamond and Corundum chemical formula.

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Diamond and Corundum Specific Gravity

Another important criteria for qualitative analysis of gemstones is Diamond and Corundum Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Diamond and Corundum Optical Properties during the identification of gemstone. Specific gravity of Diamond is 3.90-4.05 whereas that of Corundum is 3.90-4.05.

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