Alexandrite and Cerussite Physical Properties

Alexandrite

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

3.69-3.816.46-6.57

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

1,1 ; 3,2.

Good [110] and [021]

1.7 Mohs Hardness

8.53-3.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

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

Alexandrite and Cerussite Chemical Formula

While comparing Alexandrite 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 Alexandrite and Cerussite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Cerussite- PbCO 3Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alexandrite and Cerussite Specific Gravity

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