Alexandrite and Sinhalite Physical Properties

Alexandrite

Sinhalite

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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

3.69-3.813.46-3.50

1 7.18

1.5 Fracture

Not Available

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

1.6 Cleavage

1,1 ; 3,2.

Not Available

1.7 Mohs Hardness

8.56-7

2 10

1.8 Chemical Composition

BeAl ₂ O ₄

MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

Alexandrite and Sinhalite Chemical Formula

While comparing Alexandrite and Sinhalite 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 Sinhalite chemical formula.

Chemical formula of Alexandrite- BeAl ₂ O ₄
Chemical formula of Sinhalite- MgAlBO 4Michael OâDonoghue , Gems, Sixth Edition (2006) More from other references

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Alexandrite Vs Gahnospinel

Alexandrite and Sinhalite Specific Gravity

Another important criteria for qualitative analysis of gemstones is Alexandrite and Sinhalite Specific gravity. Specific gravity is the relative density of a gemstone compared with respect to density of water. Gemologists use Alexandrite and Sinhalite Optical Properties during the identification of gemstone. Specific gravity of Alexandrite is 3.46-3.50 whereas that of Sinhalite is 3.46-3.50.