Baddeleyite and Alexandrite Physical Properties

Baddeleyite

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

5.5-6.0

3.69-3.81

1.5 Fracture

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009), Brittle, Conchoidal

Not Available

1.6 Cleavage

{001} Distinct

1,1 ; 3,2.

1.7 Mohs Hardness

6.5

8.5

1.8 Chemical Composition

ZrO 2Arthur Thomas , Gemstones (2009)

BeAl ₂ O ₄

Baddeleyite and Alexandrite Chemical Formula

While comparing Baddeleyite 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 Baddeleyite and Alexandrite chemical formula.

Chemical formula of Baddeleyite- ZrO 2Arthur Thomas , Gemstones (2009)
Chemical formula of Alexandrite- BeAl ₂ O ₄

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Baddeleyite and Alexandrite Specific Gravity

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