Alexandrite and Pearl Physical Properties

Alexandrite

Pearl

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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

2.60-2.85

1.5 Fracture

Not Available

Gemstones of the world (2001), UnevenWalter Schumann, Gemstones of the world (2001)

1.6 Cleavage

1,1 ; 3,2.

none

1.7 Mohs Hardness

8.5

2.5-4.5

1.8 Chemical Composition

BeAl ₂ O ₄

Not Available

Alexandrite and Pearl Chemical Formula

While comparing Alexandrite and Pearl 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 Pearl chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄

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Alexandrite Vs Gahnospinel

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Alexandrite Vs Citrine

Alexandrite and Pearl Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Pearl Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Pearl Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 2.60-2.85 whereas that of Pearl is 2.60-2.85.