Alexandrite and Starlite Physical Properties

Alexandrite

Starlite

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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

3.69-3.813.91-4.73

1 7.18

1.5 Fracture

Not Available

ConchoidalArthur Thomas, Gemstones (2009), ConchoidalArthur Thomas, Gemstones (2009)

1.6 Cleavage

1,1 ; 3,2.

Not Available

1.7 Mohs Hardness

8.56.5-7.5

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

Alexandrite and Starlite Chemical Formula

While comparing Alexandrite and Starlite 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 Starlite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Starlite- ZrSiO 4Michael OâDonoghue , Gems, Sixth Edition (2006)

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Alexandrite and Starlite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Starlite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Starlite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.91-4.73 whereas that of Starlite is 3.91-4.73.