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Sapphire and Austinite Physical Properties


Austinite and Sapphire Physical Properties


Physical Properties

Tenacity
Not Available   
Brittle   

Solubility
insoluble   
Easily soluble in cold dilute HCl   

Durability
Not Available   
Not Available   

Specific Gravity
3.95-4.03   
4.12   

Fracture
Uneven, Uneven, Gems, Sixth Edition (2006)   
Brittle, Uneven, Brittle, Uneven   

Cleavage
None, but may exhibit parting   
Good in two directions parallel to the prism faces {110}   

Mohs Hardness
9   
4-4.5   

Chemical Composition
Al 2 O 3   
CaZn(AsO4)(OH)   

Optical Properties >>
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Sapphire and Austinite Chemical Formula

While comparing Sapphire and Austinite 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 Austinite chemical formula.

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Sapphire and Austinite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Austinite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Austinite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 4.12 whereas that of Austinite is 4.12.

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