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Ruby and Cobaltite Physical Properties


Cobaltite and Ruby Physical Properties


Physical Properties

Tenacity
Brittle   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.97-4.05   
6.3   

Fracture
Conchoidal   
UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, UnevenAnthony et al, Handbook of mineralogy (2001) More from other references, Brittle, Metallic   

Cleavage
No true cleavage   
{100} Good, {010} Good, {001} Good   

Mohs Hardness
9   
5.5   

Chemical Composition
Al 2 O 3   
CoAsSAnthony et al , Handbook of mineralogy (2001)   

Optical Properties >>
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Ruby and Cobaltite Chemical Formula

While comparing Ruby and Cobaltite 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 Ruby and Cobaltite chemical formula.

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Ruby and Cobaltite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Ruby and Cobaltite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Ruby and Cobaltite Optical Properties during the identification of gemstone. Specific gravity of Ruby is 6.3 whereas that of Cobaltite is 6.3.

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