Willemite and Gahnite Physical Properties

Willemite

Gahnite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.89-4.184.00-4.62

1 7.18

1.5 Fracture

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Uneven

Conchoidal, Uneven

1.6 Cleavage

{0001}, {11 2 0} imperfect

Indistinct parting on [111]

1.7 Mohs Hardness

5.57.5-8

2 10

1.8 Chemical Composition

Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Willemite and Gahnite Chemical Formula

While comparing Willemite 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 Willemite and Gahnite chemical formula.

Chemical formula of Willemite- Zn 2SiO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Willemite and Gahnite Specific Gravity

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