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Gypsum and Sapphire Physical Properties


Sapphire and Gypsum Physical Properties


Physical Properties

Tenacity
Flexible   
Not Available   

Solubility
Soluble   
insoluble   

Durability
Not Available   
Not Available   

Specific Gravity
2.20-2.40   
3.95-4.03   

Fracture
Conchoidal, Splintery, Fibrous, UnevenArthur Thomas, Gemstones (2009)   
Uneven, Uneven, Gems, Sixth Edition (2006)   

Cleavage
Perfect on {010}, distinct on {100}   
None, but may exhibit parting   

Mohs Hardness
2   
9   

Chemical Composition
CaSO 4 -2(H 2O)Arthur Thomas , Gemstones (2009)   
Al 2 O 3   

Optical Properties >>
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Gypsum and Sapphire Chemical Formula

While comparing Gypsum and Sapphire 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 Gypsum and Sapphire chemical formula.

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Gypsum and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gypsum and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gypsum and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Gypsum is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.

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Colorless Gems


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