Alexandrite and Gaylussite Physical Properties

Alexandrite

Gaylussite

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1 Physical Properties

1.1 Tenacity

Not Available

1.2 Solubility

Not Available

decomposes in water

1.3 Durability

Not Available

1.4 Specific Gravity

3.69-3.81

1.93-1.99

1.5 Fracture

Not Available

Conchoidal, Conchoidal, Brittle

1.6 Cleavage

1,1 ; 3,2.

perfect [110]

1.7 Mohs Hardness

8.5

2.5

1.8 Chemical Composition

BeAl ₂ O ₄

Na2Ca(CO3)2•5(H2O)

Alexandrite and Gaylussite Chemical Formula

While comparing Alexandrite and Gaylussite 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 Gaylussite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Gaylussite- Na2Ca(CO3)2•5(H2O)

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Alexandrite and Gaylussite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Gaylussite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Gaylussite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 1.93-1.99 whereas that of Gaylussite is 1.93-1.99.