Sapphirine and Gahnite Physical Properties

Sapphirine

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

3.40-3.584.00-4.62

1 7.18

1.5 Fracture

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

Conchoidal, Uneven

1.6 Cleavage

{010} Perfect

Indistinct parting on [111]

1.7 Mohs Hardness

7.57.5-8

2 10

1.8 Chemical Composition

(Al,Mg) 8(Al,Si) 6O 20Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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

Sapphirine and Gahnite Chemical Formula

While comparing Sapphirine 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 Sapphirine and Gahnite chemical formula.

Chemical formula of Sapphirine- (Al,Mg) 8(Al,Si) 6O 20Michael 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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Sapphirine and Gahnite Specific Gravity

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