Sapphirine and Nepheline Physical Properties

Sapphirine

Nepheline

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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

3.40-3.582.55-2.65

1 7.18

1.5 Fracture

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

Subconchoidal, ConchoidalArthur Thomas, Gemstones (2009), Conchoidal, Brittle

1.6 Cleavage

{010} Perfect

[1010] Poor

1.7 Mohs Hardness

7.55-6

2 10

1.8 Chemical Composition

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

Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

Sapphirine and Nepheline Chemical Formula

While comparing Sapphirine and Nepheline 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 Nepheline 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 Nepheline- Na 3(Na,K)Al 4Si 4O 16Ulrich Henn and Claudio C.

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Sapphirine and Nepheline Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphirine and Nepheline Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphirine and Nepheline Optical Properties during the identification of gemstone. Specific gravity of Sapphirine is 2.55-2.65 whereas that of Nepheline is 2.55-2.65.