Sapphirine and Purpurite Physical Properties

Sapphirine

Purpurite

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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

3.40-3.583.2-3.4

1 7.18

1.5 Fracture

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

Uneven, UnevenArthur Thomas, Gemstones (2009), Brittle

1.6 Cleavage

{010} Perfect

[100] [001] perfect

1.7 Mohs Hardness

7.54-4.5

2 10

1.8 Chemical Composition

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

MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

Sapphirine and Purpurite Chemical Formula

While comparing Sapphirine and Purpurite 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 Purpurite 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 Purpurite- MnPO 4Walter Schumann , Gemstones of the world (2001) More from other references

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Sapphirine and Purpurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphirine and Purpurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphirine and Purpurite Optical Properties during the identification of gemstone. Specific gravity of Sapphirine is 3.2-3.4 whereas that of Purpurite is 3.2-3.4.