Umbalite and Azurite Physical Properties

Umbalite

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

3.62-4.33

3.70-3.90

1.5 Fracture

Uneven, Uneven, ConchoidalGemdat.org, Management Team (2012)

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

1.6 Cleavage

Not Available

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

1.7 Mohs Hardness

7-7.5

3.5-4

1.8 Chemical Composition

Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)

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

Umbalite and Azurite Chemical Formula

While comparing Umbalite 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 Umbalite and Azurite chemical formula.

Chemical formula of Umbalite- Mg 3Al 2(SiO 4) 3 -Mn2+3Al 2(SiO 4) 3Gemdat.org , Management Team (2012)
Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Umbalite and Azurite Specific Gravity

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