Alexandrite and Chromite Physical Properties

Alexandrite

Chromite

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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

3.69-3.814.5-4.8

1 7.18

1.5 Fracture

Not Available

Uneven

1.6 Cleavage

1,1 ; 3,2.

None, parting may develop along {111}

1.7 Mohs Hardness

8.55.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

Fe++Cr2O4

Alexandrite and Chromite Chemical Formula

While comparing Alexandrite and Chromite 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 Chromite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Chromite- Fe++Cr2O4

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Alexandrite and Chromite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Chromite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Chromite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 4.5-4.8 whereas that of Chromite is 4.5-4.8.