Sapphire and Augelite Physical Properties

Sapphire

Augelite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

insoluble

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.95-4.032.70-2.75

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

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

1.6 Cleavage

None, but may exhibit parting

From the Greek for luster, for its pearly luster on the cleavage.

1.7 Mohs Hardness

94.5-5

2 10

1.8 Chemical Composition

Al ₂ O ₃

Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

Sapphire and Augelite Chemical Formula

While comparing Sapphire and Augelite 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 Sapphire and Augelite chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Augelite- Al 2(PO 4)(OH) 3Michael OâDonoghue , Gems, Sixth Edition (2006)

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Sapphire and Augelite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Augelite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Augelite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 2.70-2.75 whereas that of Augelite is 2.70-2.75.