Kornerupine and Gahnite Physical Properties

Kornerupine

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

3.25-3.454.00-4.62

1 7.18

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Uneven

Conchoidal, Uneven

1.6 Cleavage

Good on {110}

Indistinct parting on [111]

1.7 Mohs Hardness

6.57.5-8

2 10

1.8 Chemical Composition

Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references

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

Kornerupine and Gahnite Chemical Formula

While comparing Kornerupine 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 Kornerupine and Gahnite chemical formula.

Chemical formula of Kornerupine- Mg 3Al 6(Si,Al,B) 5O 21(OH)Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Gahnite- ZnAl 2O 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

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Kornerupine and Gahnite Specific Gravity

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