Serpentine and Alexandrite Physical Properties

Serpentine

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

2.44-2.62

3.69-3.81

1.5 Fracture

Uneven, Uneven, Gemstones of the world (2001) More from other references

Not Available

1.6 Cleavage

Not Available

1,1 ; 3,2.

1.7 Mohs Hardness

2.5-5.5

8.5

1.8 Chemical Composition

H 4Mg 3Si 2O 9Walter Schumann , Gemstones of the world (2001) More from other references

BeAl ₂ O ₄

Serpentine and Alexandrite Chemical Formula

While comparing Serpentine 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 Serpentine and Alexandrite chemical formula.

Chemical formula of Serpentine- H 4Mg 3Si 2O 9Walter Schumann , Gemstones of the world (2001) More from other references
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Serpentine and Alexandrite Specific Gravity

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