Kornerupine and Poudretteite Physical Properties

Kornerupine

Poudretteite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.452.51-2.53

1 7.18

1.5 Fracture

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

Conchoidal, Splintery

1.6 Cleavage

Good on {110}

None

1.7 Mohs Hardness

6.55

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

KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Kornerupine and Poudretteite Chemical Formula

While comparing Kornerupine and Poudretteite 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 Poudretteite 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 Poudretteite- KNa 2B 3Si 12O 30Michael OâDonoghue , Gems, Sixth Edition (2006)

Compare Green Gemstones

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Kornerupine and Poudretteite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Poudretteite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Poudretteite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 2.51-2.53 whereas that of Poudretteite is 2.51-2.53.