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Malachite and Corundum Physical Properties


Corundum and Malachite Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
Not Available   
insoluble   

Durability
Not Available   
Not Available   

Specific Gravity
3.25-4.10   
3.90-4.05   

Fracture
Conchoidal, Conchoidal, Gemstones (2009), Uneven   
Uneven, Uneven, Gems, Difficult, Fibrous   

Cleavage
Perfect on { 2 01} fair on {010}   
None – parting in 3 directions   

Mohs Hardness
3.5-4   
9   

Chemical Composition
Cu2CO3(OH)2   
Al 2O 3Arthur Thomas , Gemstones (2009)   

Optical Properties >>
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Malachite and Corundum Chemical Formula

While comparing Malachite 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 Malachite and Corundum chemical formula.

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Malachite and Corundum Specific Gravity

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

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