Alexandrite and Aegirine Physical Properties

Alexandrite

Aegirine

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1 Physical Properties

1.1 Tenacity

Not Available

Brittle

1.2 Solubility

Not Available

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.813.50-3.60

1 7.18

1.5 Fracture

Not Available

Uneven, Brittle, Metallic, Brittle, Metallic, Brittle, Metallic

1.6 Cleavage

1,1 ; 3,2.

Good on {110}, (110) ^ (1 1 0) ≈87°; parting on {100}

1.7 Mohs Hardness

8.56

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

(Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

Alexandrite and Aegirine Chemical Formula

While comparing Alexandrite and Aegirine 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 Aegirine chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Aegirine- (Na,Fe,Ca)Si 2O 6Ulrich Henn and Claudio C.

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Alexandrite and Aegirine Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Aegirine Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Aegirine Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.50-3.60 whereas that of Aegirine is 3.50-3.60.