Sapphirine and Sylvite Physical Properties

Sapphirine

Sylvite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

Soluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.40-3.581.993

1 7.18

1.5 Fracture

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

Uneven, Brittle

1.6 Cleavage

{010} Perfect

Perfect on [100], [010], [001]

1.7 Mohs Hardness

7.52.5

2 10

1.8 Chemical Composition

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

Not Available

Sapphirine and Sylvite Chemical Formula

While comparing Sapphirine and Sylvite 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 Sylvite chemical formula.

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

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Sapphirine and Sylvite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphirine and Sylvite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphirine and Sylvite Optical Properties during the identification of gemstone. Specific gravity of Sapphirine is 1.993 whereas that of Sylvite is 1.993.