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Grandidierite and Diaspore Physical Properties


Diaspore and Grandidierite Physical Properties


Physical Properties

Tenacity
Not Available   
Very brittle   

Solubility
Not Available   
insoluble   

Durability
Not Available   
Not Available   

Specific Gravity
2.85-3.00   
3.30-3.40   

Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven   
Conchoidal, Brittle, Conchoidal   

Cleavage
Perfect   
{010} perfect, {110} distinct, {100} in traces   

Mohs Hardness
7.5   
6.5-7   

Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.   
AlO(OH)Walter Schumann , Gemstones of the world (2001) More from other references   

Optical Properties >>
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Grandidierite and Diaspore Chemical Formula

While comparing Grandidierite and Diaspore 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 Grandidierite and Diaspore chemical formula.

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Grandidierite and Diaspore Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Diaspore Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Diaspore Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.30-3.40 whereas that of Diaspore is 3.30-3.40.

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