Sapphire and Lazulite Physical Properties

Sapphire

Lazulite

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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

3.95-4.033.04-3.17

1 7.18

1.5 Fracture

Uneven, Uneven, Gems, Sixth Edition (2006)

Uneven, Uneven, Gemstones of the world (2001) More from other references

1.6 Cleavage

None, but may exhibit parting

{001} Indistinct, {???} Indistinct

1.7 Mohs Hardness

95.5

2 10

1.8 Chemical Composition

Al ₂ O ₃

(Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

Sapphire and Lazulite Chemical Formula

While comparing Sapphire and Lazulite 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 Lazulite chemical formula.

Chemical formula of Sapphire- Al ₂ O ₃
Chemical formula of Lazulite- (Mg,Fe)Al 2(PO 4) 2(OH) 2Arthur Thomas , Gemstones (2009) More from other references

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Sapphire and Lazulite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Sapphire and Lazulite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Sapphire and Lazulite Optical Properties during the identification of gemstone. Specific gravity of Sapphire is 3.04-3.17 whereas that of Lazulite is 3.04-3.17.