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Vesuvianite
Vesuvianite

Gahnite
Gahnite



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Vesuvianite
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Gahnite

Vesuvianite and Gahnite Physical Properties

Physical Properties

Tenacity

-
-

Solubility

-
-

Durability

-
-

Specific Gravity

3.32-3.434.00-4.62
1 7.18
👆🏻

Fracture

Conchoidal
Conchoidal, Uneven

Cleavage

Poor on {110} and {100} very poor on {001}
Indistinct parting on [111]

Mohs Hardness

6-77.5-8
2 10
👆🏻

Chemical Composition

Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Vesuvianite and Gahnite Chemical Formula

While comparing Vesuvianite and Gahnite 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 Vesuvianite and Gahnite chemical formula.

  • Chemical formula of Vesuvianite- Ca10(Mg,Fe)2Al4(SiO4)5(Si2O7)2(OH)4
  • Chemical formula of Gahnite- ZnAl 2O 4Michael O’Donoghue , Gems, Sixth Edition (2006)

Vesuvianite and Gahnite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Vesuvianite and Gahnite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Vesuvianite and Gahnite Optical Properties during the identification of gemstone. Specific gravity of Vesuvianite is 4.00-4.62 whereas that of Gahnite is 4.00-4.62.