Alexandrite and Lawsonite Physical Properties

Alexandrite

Lawsonite

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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

3.69-3.81

3.09

1.5 Fracture

Not Available

White, Yellow, Pale blue, Brittle, Uneven

1.6 Cleavage

1,1 ; 3,2.

Perfect on {100} and {010}, imperfect on {101}

1.7 Mohs Hardness

8.5

1.8 Chemical Composition

BeAl ₂ O ₄

Not Available

Alexandrite and Lawsonite Chemical Formula

While comparing Alexandrite and Lawsonite 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 Lawsonite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄

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Alexandrite and Lawsonite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Lawsonite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Lawsonite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.09 whereas that of Lawsonite is 3.09.