Kornerupine and Brazilianite Physical Properties

Kornerupine

Brazilianite

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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

3.25-3.452.98-2.99

1 7.18

1.5 Fracture

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

Conchoidal, Gems

1.6 Cleavage

Good on {110}

(010) Distinct to good

1.7 Mohs Hardness

6.55.5

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

NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Kornerupine and Brazilianite Chemical Formula

While comparing Kornerupine and Brazilianite 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 Brazilianite 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 Brazilianite- NaAl 3(PO 4) 2(OH) 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Kornerupine and Brazilianite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Kornerupine and Brazilianite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Kornerupine and Brazilianite Optical Properties during the identification of gemstone. Specific gravity of Kornerupine is 2.98-2.99 whereas that of Brazilianite is 2.98-2.99.