Alexandrite and Nuummite Physical Properties

Alexandrite

Nuummite

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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

3.18-3.37

1.5 Fracture

Not Available

Conchoidal

1.6 Cleavage

1,1 ; 3,2.

Perfect on 210

1.7 Mohs Hardness

8.5

5.5-6

1.8 Chemical Composition

BeAl ₂ O ₄

Not Available

Alexandrite and Nuummite Chemical Formula

While comparing Alexandrite and Nuummite 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 Nuummite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄

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Alexandrite and Nuummite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Nuummite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Nuummite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.18-3.37 whereas that of Nuummite is 3.18-3.37.