Alexandrite and Azurite Physical Properties

Alexandrite

Azurite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.813.70-3.90

1 7.18

1.5 Fracture

Not Available

Conchoidal, ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

1.6 Cleavage

1,1 ; 3,2.

Perfect on {011}, fair on {100}, poor on {110}

1.7 Mohs Hardness

8.53.5-4

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Azurite Chemical Formula

While comparing Alexandrite and Azurite 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 Alexandrite and Azurite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alexandrite and Azurite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Azurite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Azurite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.70-3.90 whereas that of Azurite is 3.70-3.90.