Kornerupine and Sapphire Physical Properties

Kornerupine

Sapphire

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.25-3.453.95-4.03

1 7.18

1.5 Fracture

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

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

Good on {110}

None, but may exhibit parting

1.7 Mohs Hardness

6.59

2 10

2.5 Chemical Composition

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

Al ₂ O ₃

Kornerupine and Sapphire Chemical Formula

While comparing Kornerupine and Sapphire 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 Sapphire 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 Sapphire- Al ₂ O ₃

Compare Green Gemstones

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Kornerupine and Sapphire Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Sapphire Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Sapphire Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 3.95-4.03 whereas that of Sapphire is 3.95-4.03.