Alexandrite and Zircon Physical Properties

Alexandrite

Zircon

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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

3.69-3.81

3.93-4.73

1.5 Fracture

Not Available

Conchoidal, Uneven, ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

1,1 ; 3,2.

{110} and {111}

1.7 Mohs Hardness

8.5

7.5

1.8 Chemical Composition

BeAl ₂ O ₄

ZrSiO₄

Alexandrite and Zircon Chemical Formula

While comparing Alexandrite and Zircon 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 Zircon chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Zircon- ZrSiO₄

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Alexandrite and Zircon Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Zircon Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Zircon Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.93-4.73 whereas that of Zircon is 3.93-4.73.