Alexandrite and Cassiterite Physical Properties

Alexandrite

Cassiterite

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

insoluble

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.816.86-7.03

1 7.18

1.5 Fracture

Not Available

Subconchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009), Irregular

1.6 Cleavage

1,1 ; 3,2.

{100} imperfect, {110} indistinct; partings on {111} or {011}

1.7 Mohs Hardness

8.56-7

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

SnO 2Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Cassiterite Chemical Formula

While comparing Alexandrite and Cassiterite 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 Cassiterite chemical formula.

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

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Alexandrite and Cassiterite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Cassiterite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Cassiterite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 6.86-7.03 whereas that of Cassiterite is 6.86-7.03.