Paraiba and Alexandrite Physical Properties

Paraiba

Alexandrite

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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

3.04-3.13

3.69-3.81

1.5 Fracture

Not Available

1.6 Cleavage

Not Available

1,1 ; 3,2.

1.7 Mohs Hardness

7-7.5

8.5

1.8 Chemical Composition

Not Available

BeAl ₂ O ₄

Paraiba and Alexandrite Chemical Formula

While comparing Paraiba and Alexandrite 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 Paraiba and Alexandrite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄

Compare Blue Gemstones

Paraiba Vs Andean Opal

Paraiba Vs Anatase

Paraiba Vs Ammolite

Paraiba and Alexandrite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Paraiba and Alexandrite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Paraiba and Alexandrite Optical Properties during the identification of gemstone. Specific gravity of Paraiba is 3.69-3.81 whereas that of Alexandrite is 3.69-3.81.