Nacre and Alexandrite Physical Properties

Nacre

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

Not Available

3.69-3.81

1.5 Fracture

Not Available

1.6 Cleavage

Not Available

1,1 ; 3,2.

1.7 Mohs Hardness

Not Available

8.5

1.8 Chemical Composition

Not Available

BeAl ₂ O ₄

Nacre and Alexandrite Chemical Formula

While comparing Nacre 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 Nacre and Alexandrite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄

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Nacre Vs Cerussite

Nacre and Alexandrite Specific Gravity

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