Carnelian and Azurite Physical Properties

Carnelian

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

2.58-2.64

3.70-3.90

1.5 Fracture

Uneven, Splintery, Conchoidal, UnevenWalter Schumann, Gemstones of the world (2001)

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

1.6 Cleavage

Absent

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

1.7 Mohs Hardness

6.5-7

3.5-4

1.8 Chemical Composition

SiO₂

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

Carnelian and Azurite Chemical Formula

While comparing Carnelian 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 Carnelian and Azurite chemical formula.

Chemical formula of Carnelian- SiO₂
Chemical formula of Azurite- Cu 3(OH) 2(CO 3) 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Carnelian and Azurite Specific Gravity

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