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Hessonite
Hessonite

Dravite
Dravite



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Hessonite
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Dravite

Hessonite and Dravite Physical Properties

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Physical Properties

Tenacity

Solubility

Durability

Specific Gravity

Fracture

Cleavage

Mohs Hardness

Chemical Composition

 
-
-
-
3.55-3.73
Uneven
None
7-7.5
Ca3Al2(SiO4)3
 
-
-
-
3.03-3.18
Uneven, Irregular, Conchoidal
{???} Indistinct
7-7.5
Na(Mg 3)Al 6(Si 6O 18)(BO 3) 3(OH) 3(OH)Gemdat.org , Management Team (2012)

Hessonite and Dravite Chemical Formula

While comparing Hessonite and Dravite 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 Hessonite and Dravite chemical formula.

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Hessonite and Dravite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Hessonite and Dravite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Hessonite Vs Dravite during the identification of gemstone. Specific gravity of Hessonite is whereas that of Dravite is .