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Dravite and Iolite Physical Properties


Iolite and Dravite Physical Properties


Physical Properties

Tenacity
Not Available   
Not Available   

Solubility
Not Available   
Not Available   

Durability
Not Available   
Not Available   

Specific Gravity
3.03-3.18   
2.6-2.7   

Fracture
Uneven, Uneven, Irregular, ConchoidalAnthony et al, Handbook of mineralogy (2001), Conchoidal, Brittle   
Not Available   

Cleavage
{???} Indistinct   
3,1   

Mohs Hardness
7-7.5   
7-7.5   

Chemical Composition
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)   
Mg2Al4Si5O18   

Optical Properties >>
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Dravite and Iolite Chemical Formula

While comparing Dravite and Iolite 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 Dravite and Iolite chemical formula.

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Dravite and Iolite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Dravite and Iolite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Dravite and Iolite Optical Properties during the identification of gemstone. Specific gravity of Dravite is 2.6-2.7 whereas that of Iolite is 2.6-2.7.

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