Sapphire and Augite Physical Properties

Sapphire

Augite

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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

3.95-4.033.19-3.56

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Uneven, Uneven, ConchoidalAnthony et al, Handbook of mineralogy (2001), Brittle, Conchoidal

1.6 Cleavage

None, but may exhibit parting

{110} Perfect, {010} Indistinct

1.7 Mohs Hardness

95.5-6

2 10

1.8 Chemical Composition

Al ₂ O ₃

(Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

Sapphire and Augite Chemical Formula

While comparing Sapphire and Augite 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 Augite chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Augite- (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al) 2O 6Anthony et al , Handbook of mineralogy (2001)

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Sapphire and Augite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Augite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Augite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 3.19-3.56 whereas that of Augite is 3.19-3.56.