Alexandrite and Imperial Topaz Physical Properties

Alexandrite

Imperial Topaz

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.81

3.49-3.57

1.5 Fracture

Not Available

Uneven

1.6 Cleavage

1,1 ; 3,2.

Not Available

1.7 Mohs Hardness

8.5

1.8 Chemical Composition

BeAl ₂ O ₄

Not Available

Alexandrite and Imperial Topaz Chemical Formula

While comparing Alexandrite and Imperial Topaz 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 Imperial Topaz chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄

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Alexandrite and Imperial Topaz Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Imperial Topaz Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Imperial Topaz Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.49-3.57 whereas that of Imperial Topaz is 3.49-3.57.