Iolite and Cerussite Physical Properties

Iolite

Cerussite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

2.6-2.76.46-6.57

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

3,1

Good [110] and [021]

1.7 Mohs Hardness

7-7.53-3.5

2 10

1.8 Chemical Composition

Mg₂Al₄Si₅O₁₈

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

Iolite and Cerussite Chemical Formula

While comparing Iolite and Cerussite 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 Iolite and Cerussite chemical formula.

Chemical formula of Iolite- Mg₂Al₄Si₅O₁₈
Chemical formula of Cerussite- PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Iolite and Cerussite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Iolite and Cerussite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Iolite and Cerussite Optical Properties during the identification of gemstone. Specific gravity of Iolite is 6.46-6.57 whereas that of Cerussite is 6.46-6.57.