Cerussite and Black Opal Physical Properties

Cerussite

Black Opal

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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

6.46-6.571.97-2.22

1 7.18

1.5 Fracture

Uneven, Uneven, ConchoidalWalter Schumann, Gemstones of the world (2001) More from other references, Brittle, Conchoidal

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

Good [110] and [021]

Not Available

1.7 Mohs Hardness

3-3.56-6.5

2 10

1.8 Chemical Composition

PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

SiO 2 + H 2OUlrich Henn and Claudio C.

Cerussite and Black Opal Chemical Formula

While comparing Cerussite and Black Opal 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 Cerussite and Black Opal chemical formula.

Chemical formula of Cerussite- PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references
Chemical formula of Black Opal- SiO 2 + H 2OUlrich Henn and Claudio C.

Compare Brown Gemstones

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Cerussite Vs Diamond

Cerussite Vs Cubic Zirconia

Cerussite and Black Opal Specific Gravity

Another important criteria for qualitative analysis of gemstones is Cerussite and Black Opal Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Cerussite and Black Opal Optical Properties during the identification of gemstone. Specific gravity of Cerussite is 1.97-2.22 whereas that of Black Opal is 1.97-2.22.