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Gibbsite and Sard Physical Properties


Sard and Gibbsite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.35   
2.58-2.63   

Fracture
Fibrous, Difficult, Fibrous   
ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)   

Cleavage
{001} Perfect   
Not Available   

Mohs Hardness
2.5-3   
6.5-7   

Chemical Composition
Al(OH)3   
SiO 2Ulrich Henn and Claudio C.   

Optical Properties >>
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Gibbsite and Sard Chemical Formula

While comparing Gibbsite and Sard 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 Gibbsite and Sard chemical formula.

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Gibbsite and Sard Specific Gravity

Another important criteria for qualitative analysis of gemstones is Gibbsite and Sard Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Gibbsite and Sard Optical Properties during the identification of gemstone. Specific gravity of Gibbsite is 2.58-2.63 whereas that of Sard is 2.58-2.63.

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Grey Gemstones


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