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Grandidierite and Erythrite Physical Properties


Erythrite and Grandidierite Physical Properties


Physical Properties

Tenacity
Not Available   
Sectile   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
2.85-3.00   
3.06   

Fracture
Brittle, UnevenArthur Thomas, Gemstones (2009), Brittle, Uneven   
Sectile Curved shavings or scrapings produced by a knife blade, (e.g. graphite).   

Cleavage
Perfect   
Perfect on {010}; poor on {100} and { 1 02}.   

Mohs Hardness
7.5   
Not Available   

Chemical Composition
(Mg,Fe)Al 3(BO 4)(SiO 4)OUlrich Henn and Claudio C.   
Co3(AsO4)2•8(H2O)   

Optical Properties >>
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Grandidierite and Erythrite Chemical Formula

While comparing Grandidierite and Erythrite 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 Erythrite chemical formula.

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Grandidierite and Erythrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Grandidierite and Erythrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Grandidierite and Erythrite Optical Properties during the identification of gemstone. Specific gravity of Grandidierite is 3.06 whereas that of Erythrite is 3.06.

Green Gemstones

Green Gemstones


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