Alexandrite and Amazonite Physical Properties

Alexandrite

Amazonite

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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

2.55-2.57

1.5 Fracture

Not Available

Uneven, Uneven, Gems, Sixth Edition (2006)

1.6 Cleavage

1,1 ; 3,2.

2,1 basal ; 2,1 prismatic ; 3,1 pinacoidal

1.7 Mohs Hardness

8.5

6-6.5

1.8 Chemical Composition

BeAl ₂ O ₄

KAlSi₃O₈

Alexandrite and Amazonite Chemical Formula

While comparing Alexandrite and Amazonite 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 Amazonite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Amazonite- KAlSi₃O₈

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Alexandrite and Amazonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Amazonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Amazonite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.55-2.57 whereas that of Amazonite is 2.55-2.57.