Alexandrite and Shigaite Physical Properties

Alexandrite

Shigaite

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1 Physical Properties

1.1 Tenacity

Not Available

Moderately ﬂexible

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.81

2.32

1.5 Fracture

Not Available

Flexible Flexible fragments.

1.6 Cleavage

1,1 ; 3,2.

Perfect on {0001}

1.7 Mohs Hardness

8.5

1.8 Chemical Composition

BeAl ₂ O ₄

Not Available

Alexandrite and Shigaite Chemical Formula

While comparing Alexandrite and Shigaite 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 Shigaite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄

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Alexandrite and Shigaite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Shigaite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Shigaite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.32 whereas that of Shigaite is 2.32.